4H-1-benzopyran-4-one, 2,3-dihydro-5-hydroxy-3-[(4-hydroxyphenyl)methyl]-7-methoxy- 5-hydroxy-3-(4-hydroxybenzyl)-7-methoxy-2,3-dihydro-4H-chromen-4-one InChI=1/C17H16O5/c1-21-13-7-14(19)16-15(8-13)22-9-11(17(16)20)6-10-2-4-12(18)5-3-10/h2-5,7-8,11,18-19H,6,9H2,1H