4H-1-benzopyran-4-one, 2,3-dihydro-5,7-dihydroxy-3-[(4-hydroxyphenyl)methyl]-6-methoxy- 5,7-dihydroxy-3-(4-hydroxybenzyl)-6-methoxy-2,3-dihydro-4H-chromen-4-one InChI=1/C17H16O6/c1-22-17-12(19)7-13-14(16(17)21)15(20)10(8-23-13)6-9-2-4-11(18)5-3-9/h2-5,7,10,18-19,21H,6,8H2,1H