RESIDUE 0AZ 18 CONECT N 3 CA CD H CONECT CA 4 N C CB HA CONECT C 3 CA O OXT CONECT O 1 C CONECT CB 4 CA CG HB2 HB3 CONECT CG 4 CB CD OD1 HG CONECT CD 4 N CG HD22 HD23 CONECT OD1 2 CG HD1 CONECT OXT 2 C HXT CONECT H 1 N CONECT HA 1 CA CONECT HB2 1 CB CONECT HB3 1 CB CONECT HG 1 CG CONECT HD22 1 CD CONECT HD23 1 CD CONECT HD1 1 OD1 CONECT HXT 1 OXT END HET 0AZ 18 HETNAM 0AZ (4R)-4-hydroxy-D-proline FORMUL 0AZ C5 H9 N1 O3