1,4-acridinedione, 9-[(trimethylsilyl)ethynyl]- 9-[(trimethylsilyl)ethynyl]acridine-1,4-dione InChI=1/C18H15NO2Si/c1-22(2,3)11-10-13-12-6-4-5-7-14(12)19-18-16(21)9-8-15(20)17(13)18/h4-9H,1-3H