有机化学化学式答:CAS Registry Number: 13360-87-7 C16 H6 O6 1H,3H-Benzo[1,2-c:4,5-c']difuran-1,3,5,7-tetrone, 4-phenyl- (9CI)2,3,5,6-Biphenyltetracarboxylic 2,3:5,6-dianhydride (7CI,8CI)CAS Registry Number: 139162-14-4 C19 H4 F6 O7 1H-Difuro[3,4-b:3',4'-i]xanthene-1...