| Type | Program | Version | Descriptor |
| SMILES | ACDLabs | 10.04 | [O-]c4c(c1ccccc1)cccc4c3nc2cc(ccc2n3)\C(=[NH2+])N |
| SMILES_CANONICAL | CACTVS | 3.341 | NC(=[NH2+])c1ccc2[nH]c(nc2c1)c3cccc(c3[O-])c4ccccc4 |
| SMILES | CACTVS | 3.341 | NC(=[NH2+])c1ccc2[nH]c(nc2c1)c3cccc(c3[O-])c4ccccc4 |
| SMILES_CANONICAL | OpenEye OEToolkits | 1.5.0 | c1ccc(cc1)c2cccc(c2[O-])c3[nH]c4ccc(cc4n3)C(=[NH2+])N |
| SMILES | OpenEye OEToolkits | 1.5.0 | c1ccc(cc1)c2cccc(c2[O-])c3[nH]c4ccc(cc4n3)C(=[NH2+])N |
| InChI | InChI | 1.03 | InChI=1S/C20H16N4O/c21-19(22)13-9-10-16-17(11-13)24-20(23-16)15-8-4-7-14(18(15)25)12-5-2-1-3-6-12/h1-11,25H,(H3,21,22)(H,23,24) |
| InChIKey | InChI | 1.03 | LMGQGPVCSYOMNS-UHFFFAOYSA-N |
