3,3-dimethyl-7,7-diphenyl-1,2-dioxaspiro[3,5]nona-5,8-diene

3,4-diphenyl-2-cyclohexen-1-one

4-环戊烯-1,3-二酮

hydrazine-N,N'-dicarboxylic acid bis-diphenylamide

4-methoxy-6,6-diphenylbicyclo<3.1.0>hex-3-en-2-one