RESIDUE   XD1     28
CONECT      C      3 O    CA   HA  
CONECT      N      3 CA   HN   HNA 
CONECT      O      1 C   
CONECT      CA     4 C    N    CB   HAA 
CONECT      CB     4 CA   NAH  SAI  HB  
CONECT      CAA    4 CAN  HAAA HAAB HAAC
CONECT      CAB    4 CAN  HAB  HABA HABB
CONECT      OAE    2 CAJ  HOAE
CONECT      OAF    1 CAJ 
CONECT      NAH    3 CB   CAM  HNAH
CONECT      SAI    2 CB   CAN 
CONECT      CAJ    3 OAE  OAF  CAM 
CONECT      CAM    4 NAH  CAJ  CAN  HAM 
CONECT      CAN    4 CAA  CAB  SAI  CAM 
CONECT      HA     1 C   
CONECT      HN     1 N   
CONECT      HNA    1 N   
CONECT      HAA    1 CA  
CONECT      HB     1 CB  
CONECT      HAAA   1 CAA 
CONECT      HAAB   1 CAA 
CONECT      HAAC   1 CAA 
CONECT      HAB    1 CAB 
CONECT      HABA   1 CAB 
CONECT      HABB   1 CAB 
CONECT      HOAE   1 OAE 
CONECT      HNAH   1 NAH 
CONECT      HAM    1 CAM 
END   
HET    XD1             28
HETSYN     XD1 6-aminopenicillian, bound form
HETNAM     XD1 (2R,4S)-2-[(1R)-1-amino-2-oxoethyl]-5,5-dimethyl-1,3-th
HETNAM   2 XD1 iazolidine-4-carboxylic acid
FORMUL      XD1    C8 H14 N2 O3 S1