RESIDUE 0HQ 5 CONECT C1 3 N1 H1 H2 CONECT N1 2 C1 N2 CONECT N2 1 N1 CONECT H1 1 C1 CONECT H2 1 C1 END HET 0HQ 5 HETSYN 0HQ DIAZOMETHYL GROUP HETNAM 0HQ diazomethane FORMUL 0HQ C1 H2 N2