RESIDUE 2TQ 20 CONECT O 2 C H1 CONECT C 3 O OXT CA CONECT OXT 1 C CONECT CA 4 C CB N H2 CONECT CB 4 CA CG H3 H4 CONECT CG 4 CB CD H5 H6 CONECT CD 4 CG N CAF H7 CONECT N 3 CA CD CAH CONECT CAH 3 N OAB CAF CONECT OAB 1 CAH CONECT CAF 4 CD CAH H8 H9 CONECT H1 1 O CONECT H2 1 CA CONECT H3 1 CB CONECT H4 1 CB CONECT H5 1 CG CONECT H6 1 CG CONECT H7 1 CD CONECT H8 1 CAF CONECT H9 1 CAF END HET 2TQ 20 HETNAM 2TQ (2S,5S)-7-oxo-1-azabicyclo[3.2.0]heptane-2-carboxylic a HETNAM 2 2TQ cid FORMUL 2TQ C7 H9 N1 O3