RESIDUE 3PG 18 CONECT C1 3 O1 O2 C2 CONECT O1 1 C1 CONECT O2 2 C1 HO2 CONECT C2 4 C1 O3 C3 H2 CONECT O3 2 C2 HO3 CONECT C3 4 C2 O1P H31 H32 CONECT O1P 2 C3 P CONECT P 4 O1P O2P O3P O4P CONECT O2P 1 P CONECT O3P 2 P HOP3 CONECT O4P 2 P HOP4 CONECT HO2 1 O2 CONECT H2 1 C2 CONECT HO3 1 O3 CONECT H31 1 C3 CONECT H32 1 C3 CONECT HOP3 1 O3P CONECT HOP4 1 O4P END HET 3PG 18 HETNAM 3PG 3-PHOSPHOGLYCERIC ACID FORMUL 3PG C3 H7 O7 P1