RESIDUE 9VD 16 CONECT CDF 3 ODK CDE H1 CONECT ODK 1 CDF CONECT CDE 4 CDF CDR NDD H2 CONECT CDR 4 CDE CDS ODT H3 CONECT CDS 4 CDR H4 H5 H6 CONECT ODT 2 CDR H7 CONECT NDD 3 CDE H8 H9 CONECT H1 1 CDF CONECT H2 1 CDE CONECT H3 1 CDR CONECT H4 1 CDS CONECT H5 1 CDS CONECT H6 1 CDS CONECT H7 1 ODT CONECT H8 1 NDD CONECT H9 1 NDD END HET 9VD 16 HETNAM 9VD (2S,3S)-2-amino-3-hydroxybutanal FORMUL 9VD C4 H9 N1 O2