RESIDUE 12N 27 CONECT N29 3 C30 H37 H2 CONECT C30 4 N29 C31 C37 H38 CONECT C31 4 C30 C32 H39 H40 CONECT C32 4 C31 C33 C34 H41 CONECT C33 4 C32 C35 H42 H43 CONECT C34 4 C32 C35 H44 H45 CONECT C35 4 C33 C34 H46 H47 CONECT O36 2 C37 H48 CONECT C37 4 C30 O36 C40 H49 CONECT O38 1 C40 CONECT C40 3 C37 O38 OXT CONECT H37 1 N29 CONECT H38 1 C30 CONECT H39 1 C31 CONECT H40 1 C31 CONECT H41 1 C32 CONECT H42 1 C33 CONECT H43 1 C33 CONECT H44 1 C34 CONECT H45 1 C34 CONECT H46 1 C35 CONECT H47 1 C35 CONECT H48 1 O36 CONECT H49 1 C37 CONECT H2 1 N29 CONECT OXT 2 C40 HXT CONECT HXT 1 OXT END HET 12N 27 HETNAM 12N (2R,3S)-3-amino-4-cyclobutyl-2-hydroxybutanoic acid FORMUL 12N C8 H15 N1 O3