ethyl 4-(2-ethoxyphenyl)-2-hydroxy-4-oxo-2-butenoate

3-(methoxycarbonyl)-2-(3,4,5-trimethoxyphenyl)-4H-benzopyran-4-one

4-methyl-1,2-benzoxathiine 2,2-dioxide

(2Z,4E)-5-(4-chlorophenyl)-3-hydroxy-1-(2-hydroxyphenyl)penta-2,4-dien-1-one