4H-1-benzopyran-4-one, 2,3-dihydro-5,8-dihydroxy-3-[(4-hydroxyphenyl)methyl]-6,7-dimethoxy- 5,8-dihydroxy-3-(4-hydroxybenzyl)-6,7-dimethoxy-2,3-dihydro-4H-chromen-4-one InChI=1/C18H18O7/c1-23-17-14(21)12-13(20)10(7-9-3-5-11(19)6-4-9)8-25-16(12)15(22)18(17)24-2/h3-6,10,19,21-22H,7-8H2,1-2H