3-(2,4-dimethoxyphenyl)-4-hydroxy-7-methoxy-1-benzopyran-2-one

coumestrol

2,4-diacetoxy-2'-methoxy-4'-tosyloxy-diphenylacetylene

1-(2,4-二羟基苯基)-2-(2,4-二甲氧基苯基)乙酮

methyl 2-(2-hydroxy-4-methoxyphenyl)-2-oxoethanoate