英文别名
2,4,7,9-tetramethyl-1,2,3,4,7,8,9,10-octahydropyrimido<4',5':3,4>pyridazino<3,4-d>pyrimidine-1,3,8,10-tetraone;2,4,7,9-tetramethyl-4,7-dihydro-dipyrimido[4,5-c;5',4'-e]pyridazine-1,3,8,10-tetraone;4,6,11,13-Tetramethyl-4,6,8,9,11,13-hexazatricyclo[8.4.0.02,7]tetradeca-1,7,9-triene-3,5,12,14-tetrone