Synonyms: 2-Propenoicacid, 3-(4-hydroxy-3-methoxyphenyl)-,(2Z)-4-[2,6-dihydroxy-3-[(2E)-3-(4-hydroxyphenyl)-1-oxo-2-propenyl]phenyl]-2-methyl-2-butenylester, (2E)- (9CI); 2-Propenoic acid, 3-(4-hydroxy-3-methoxyphenyl)-,4-[2,6-dihydroxy-3-[3-(4-hydroxyphenyl)-1-oxo-2-propenyl]phenyl]-2-methyl-2-butenylester, [1(E),2Z,4(E)]-; Gemichalcone A