RESIDUE 2OP 12 CONECT C 3 O CA OXT CONECT O 1 C CONECT CB 4 CA HB1 HB2 HB3 CONECT OHN 2 CA H CONECT CA 4 C CB OHN HA CONECT OXT 2 C HXT CONECT HB1 1 CB CONECT HB2 1 CB CONECT HB3 1 CB CONECT H 1 OHN CONECT HA 1 CA CONECT HXT 1 OXT END HET 2OP 12 HETNAM 2OP (2S)-2-HYDROXYPROPANOIC ACID FORMUL 2OP C3 H6 O3