RESIDUE 4NC 16 CONECT C1 3 C2 C6 O7 CONECT C2 3 C1 C3 O8 CONECT C3 3 C2 C4 H3 CONECT C4 3 C3 C5 N9 CONECT C5 3 C4 C6 H5 CONECT C6 3 C1 C5 H6 CONECT O7 2 C1 HO7 CONECT O8 2 C2 HO8 CONECT N9 3 C4 O10 O11 CONECT O10 1 N9 CONECT O11 1 N9 CONECT H3 1 C3 CONECT H5 1 C5 CONECT H6 1 C6 CONECT HO7 1 O7 CONECT HO8 1 O8 END HET 4NC 16 HETNAM 4NC 4-NITROCATECHOL FORMUL 4NC C6 H5 N1 O4