RESIDUE   MHM     75
CONECT      FE     4 NA   NB   NC   ND  
CONECT      NA     3 FE   C1A  C4A 
CONECT      NB     3 FE   C1B  C4B 
CONECT      NC     3 FE   C1C  C4C 
CONECT      ND     3 FE   C4D  C1D 
CONECT      C1A    3 NA   CHA  C2A 
CONECT      CHA    3 C1A  C4D  HHA 
CONECT      C4D    3 ND   CHA  C3D 
CONECT      C1B    3 NB   CHB  C2B 
CONECT      CHB    3 C1B  C4A  HHB 
CONECT      C4A    3 NA   CHB  C3A 
CONECT      C1C    3 NC   CHC  C2C 
CONECT      CHC    3 C1C  C4B  HHC 
CONECT      C4B    3 NB   CHC  C3B 
CONECT      C1D    3 ND   CHD  C2D 
CONECT      CHD    3 C1D  C4C  HHD 
CONECT      C4C    3 NC   CHD  C3C 
CONECT      C2A    3 C1A  CAA  C3A 
CONECT      CAA    4 C2A  CBA  HAA  HAA2
CONECT      C3A    3 C4A  C2A  CMA 
CONECT      CMA    4 C3A  HMA  HMA2 HMA3
CONECT      CBA    4 CAA  CGA  HBA  HBA2
CONECT      CGA    3 CBA  O1A  O2A 
CONECT      O1A    2 CGA  HO1A
CONECT      O2A    1 CGA 
CONECT      C2B    3 C1B  CMB  C3B 
CONECT      CMB    4 C2B  HMB  HMB2 HMB3
CONECT      C3B    3 C4B  C2B  CAB 
CONECT      CAB    3 C3B  CBB  HAB 
CONECT      CBB    3 CAB  HBB  HBB2
CONECT      C2C    3 C1C  CMC  C3C 
CONECT      CMC    4 C2C  HMC  HMC2 HMC3
CONECT      C3C    3 C4C  C2C  CAC 
CONECT      CAC    3 C3C  CBC  HAC 
CONECT      CBC    3 CAC  HBC  HBC2
CONECT      C2D    3 C1D  CMD  C3D 
CONECT      CMD    4 C2D  HMD  HMD2 HMD3
CONECT      C3D    3 C4D  C2D  CAD 
CONECT      CAD    4 C3D  CBD  HAD  HAD2
CONECT      CBD    4 CAD  CGD  HBD  HBD2
CONECT      CGD    3 CBD  O1D  O2D 
CONECT      O1D    1 CGD 
CONECT      O2D    2 CGD  HO2D
CONECT      HHA    1 CHA 
CONECT      HHB    1 CHB 
CONECT      HHC    1 CHC 
CONECT      HHD    1 CHD 
CONECT      HAA    1 CAA 
CONECT      HAA2   1 CAA 
CONECT      HMA    1 CMA 
CONECT      HMA2   1 CMA 
CONECT      HMA3   1 CMA 
CONECT      HBA    1 CBA 
CONECT      HBA2   1 CBA 
CONECT      HO1A   1 O1A 
CONECT      HMB    1 CMB 
CONECT      HMB2   1 CMB 
CONECT      HMB3   1 CMB 
CONECT      HAB    1 CAB 
CONECT      HBB    1 CBB 
CONECT      HBB2   1 CBB 
CONECT      HMC    1 CMC 
CONECT      HMC2   1 CMC 
CONECT      HMC3   1 CMC 
CONECT      HAC    1 CAC 
CONECT      HBC    1 CBC 
CONECT      HBC2   1 CBC 
CONECT      HMD    1 CMD 
CONECT      HMD2   1 CMD 
CONECT      HMD3   1 CMD 
CONECT      HAD    1 CAD 
CONECT      HAD2   1 CAD 
CONECT      HBD    1 CBD 
CONECT      HBD2   1 CBD 
CONECT      HO2D   1 O2D 
END   
HET    MHM             75
HETSYN     MHM MESOHEME
HETNAM     MHM [7,12-DIETHYL-3,8,13,17-TETRAMETHYL-21H,23H-PORPHINE-2,
HETNAM   2 MHM 18-DIPORPANOTO-(2)-N21,N22,N23,N24,]IRON
FORMUL      MHM    C34 H32 Fe1 N4 O4 2+