RESIDUE 4FT 16 CONECT C4 3 C5 N3 H1 CONECT C5 3 C4 C6 C10 CONECT C6 3 C5 C7 C1 CONECT C7 3 C6 C8 H2 CONECT C8 3 C7 C9 H3 CONECT C9 3 C8 C10 H4 CONECT C10 3 C5 C9 H5 CONECT N3 2 C4 N2 CONECT N2 2 N3 C1 CONECT C1 3 C6 N2 H6 CONECT H1 1 C4 CONECT H2 1 C7 CONECT H3 1 C8 CONECT H4 1 C9 CONECT H5 1 C10 CONECT H6 1 C1 END HET 4FT 16 HETNAM 4FT phthalazine FORMUL 4FT C8 H6 N2