(?,E)-2,3-Dihydro-6-methoxy-3-(3-phenyl-2-propenylidene)-4H-1-benzopyran-4-one 132828-22-9 4H-1-Benzopyran-4-one, 2,3-dihydro-6-methoxy-3-(3-phenyl-2-propenylidene)-, (?,E)-