3,4,11-trihydroxy-2-(hydroxymethyl)-8-(4-hydroxyphenyl)-3,4,4a,11b-tetrahydro-2H,10H-pyrano(2',3'-4,5)furo(3,2-g)chromen-10-one
3,4,11-trihydroxy-2-(hydroxymethyl)-8-(4-hydroxyphenyl)-3,4,4a,11b-tetrahydro-2h,10h-pyrano(2',3'-4,5)furo(3,2-g)chromen-10-one