IUPAC:5-hydroxy-3,3-dimethyl-1-{10-thia-7-azatricyclo[9.4.0.0^{3,8}]pentadeca-1(15),3,5,7,11,13-hexaen-2-yl}-1H,2H,3H,4H,6H-pyrido[1,2-b]pyridazine-4,6-dione
IUPAC:5-hydroxy-3,3-dimethyl-1-{10-thia-7-azatricyclo[9.4.0.0^{3,8}]pentadeca-1(15),3,5,7,11,13-hexaen-2-yl}-1H,2H,3H,4H,6H-pyrido[1,2-b]pyridazine-4,6-dione