RESIDUE 81R 21 CONECT N 3 CA H1 H2 CONECT CA 4 N CB C H4 CONECT CB 4 CA CG H5 H6 CONECT CG 4 CB CD1 SD2 H7 CONECT CD1 4 CG SE H8 H9 CONECT SE 2 CD1 H10 CONECT SD2 2 CG H11 CONECT C 3 CA O OXT CONECT O 1 C CONECT H1 1 N CONECT H2 1 N CONECT H4 1 CA CONECT H5 1 CB CONECT H6 1 CB CONECT H7 1 CG CONECT H8 1 CD1 CONECT H9 1 CD1 CONECT H10 1 SE CONECT H11 1 SD2 CONECT OXT 2 C H3 CONECT H3 1 OXT END HET 81R 21 HETNAM 81R (4R)-4,5-disulfanyl-L-norvaline FORMUL 81R C5 H11 N1 O2 S2