RESIDUE 05N 21 CONECT N3 3 C19 C52 H2 CONECT C19 4 N3 C20 C22 H15 CONECT C20 4 C19 C21 C53 H16 CONECT C21 4 C20 O9 C52 H17 CONECT C22 3 C19 O2 O3 CONECT O9 2 C21 H40 CONECT C52 4 N3 C21 H41 H42 CONECT C53 4 C20 H43 H44 H45 CONECT H15 1 C19 CONECT H16 1 C20 CONECT H17 1 C21 CONECT H40 1 O9 CONECT H41 1 C52 CONECT H42 1 C52 CONECT H43 1 C53 CONECT H44 1 C53 CONECT H45 1 C53 CONECT H2 1 N3 CONECT O2 2 C22 H11 CONECT O3 1 C22 CONECT H11 1 O2 END HET 05N 21 HETNAM 05N (3R,4R)-4-hydroxy-3-methyl-L-proline FORMUL 05N C6 H11 N1 O3