4,7-Dimethyl-15-oxo-5,6-diphenyl-11,12-diazapentacyclo[8.2.2.14,7.02,9.03,8]pentadeca-5,13-dien-11,12-dicarbonsaeure-diethylester

2,5-二甲基-3,4-二苯基环戊二烯酮

苯基乙烯基亚砜

3,6-dimethyl-4,5-diphenyl-1,2-dihydrophthalic anhydride