RESIDUE SNC 15 CONECT N 3 CA H H2 CONECT CA 4 N CB C HA CONECT CB 4 CA SG HB2 HB3 CONECT SG 2 CB ND CONECT ND 2 SG OE CONECT OE 1 ND CONECT C 3 CA O OXT CONECT O 1 C CONECT OXT 2 C HXT CONECT H 1 N CONECT H2 1 N CONECT HA 1 CA CONECT HB2 1 CB CONECT HB3 1 CB CONECT HXT 1 OXT END HET SNC 15 HETNAM SNC S-NITROSO-CYSTEINE FORMUL SNC C3 H6 N2 O3 S1