(3E)-4-(4-hydroxy-3-methoxyphenyl)-2-oxobut-3-en-1-yl (2E)-3-(4-hydroxy-3-methoxyphenyl)acrylate 2-propenoic acid, 3-(4-hydroxy-3-methoxyphenyl)-, (3E)-4-(4-hydroxy-3-methoxyphenyl)-2-oxo-3-butenyl ester, (2E)- 3-(4-Hydroxy-3-methoxy-phenyl)-acrylic acid 4-(4-hydroxy-3-methoxy-phenyl)-2-oxo-but-3-enyl ester 4''-(3'''-Methoxy-4'''-hydroxyphenyl)-2''-oxo-3''-enebutanyl-3-(3'-methoxy-4'-hydroxyphenyl)propenoate Calebin-A InChI=1/C21H20O7/c1-26-19-11-14(4-8-17(19)23)3-7-16(22)13-28-21(25)10-6-15-5-9-18(24)20(12-15)27-2/h3-12,23-24H,13H2,1-2H3/b7-3+,10-6