RESIDUE XZP 20 CONECT O 1 C CONECT C 3 O CA O1 CONECT CA 4 C CB CE H1 CONECT CB 4 CA N CG H2 CONECT N 3 CB H3 H4 CONECT CG 4 CB CD H6 H7 CONECT CD 4 CG CE H8 H9 CONECT CE 4 CA CD H10 H11 CONECT O1 2 C H12 CONECT H1 1 CA CONECT H2 1 CB CONECT H3 1 N CONECT H4 1 N CONECT H6 1 CG CONECT H7 1 CG CONECT H8 1 CD CONECT H9 1 CD CONECT H10 1 CE CONECT H11 1 CE CONECT H12 1 O1 END HET XZP 20 HETNAM XZP (1R,2R)-2-aminocyclopentane-1-carboxylic acid FORMUL XZP C6 H11 N1 O2