2-(3-hydroxy-5-methoxy-2,4-dimethylphenyl)-1-benzofuran-4-ol 4-benzofuranol, 2-(3-hydroxy-5-methoxy-2,4-dimethylphenyl)- InChI=1/C17H16O4/c1-9-11(7-15(20-3)10(2)17(9)19)16-8-12-13(18)5-4-6-14(12)21-16/h4-8,18-19H,1-3H