4-Methoxy-3-phenyl-2-butenoic acid lactone

furan-2-yl(thiophen-2-yl)methanone

1,3,3-三甲基-2,3-二氢-1H-吲哚-2-酮

1,4-dimethyl-3,4-dihydroquinolin-2(1H)-one

1,2-diphenylprop-2-en-1-one