RESIDUE 2AI 11 CONECT CG 3 CD2 ND1 HG CONECT CD2 3 CG NE2 HD2 CONECT NE2 2 CD2 CE1 CONECT CE1 3 NE2 ND1 NT CONECT ND1 3 CG CE1 HND1 CONECT NT 3 CE1 HNT HNTA CONECT HG 1 CG CONECT HD2 1 CD2 CONECT HND1 1 ND1 CONECT HNT 1 NT CONECT HNTA 1 NT END HET 2AI 11 HETNAM 2AI 1H-imidazol-2-amine FORMUL 2AI C3 H5 N3