4H-1-benzopyran-4-one, 7-hydroxy-3-(4-methoxyphenyl)-8-methyl- 7-hydroxy-3-(4-methoxyphenyl)-8-methyl-4H-chromen-4-one InChI=1/C17H14O4/c1-10-15(18)8-7-13-16(19)14(9-21-17(10)13)11-3-5-12(20-2)6-4-11/h3-9,18H,1-2H