RESIDUE 1HC 10 CONECT C3 3 C2 H1 H2 CONECT C2 3 C3 C1 H3 CONECT C1 3 C2 O N CONECT O 1 C1 CONECT N 3 C1 H4 H5 CONECT H1 1 C3 CONECT H2 1 C3 CONECT H3 1 C2 CONECT H4 1 N CONECT H5 1 N END HET 1HC 10 HETNAM 1HC prop-2-enamide FORMUL 1HC C3 H5 N1 O1