RESIDUE UNK 16 CONECT N 3 CA H H2 CONECT CA 4 N C CB HA CONECT C 3 CA O OXT CONECT O 1 C CONECT CB 4 CA CG HB1 HB2 CONECT CG 4 CB HG1 HG2 HG3 CONECT OXT 2 C HXT CONECT H 1 N CONECT H2 1 N CONECT HA 1 CA CONECT HB1 1 CB CONECT HB2 1 CB CONECT HG1 1 CG CONECT HG2 1 CG CONECT HG3 1 CG CONECT HXT 1 OXT END HET UNK 16 HETNAM UNK UNKNOWN FORMUL UNK C4 H9 N1 O2