Showing structure for [2-(3,4-dihydroxyphenyl)-3,5,7-trihydroxy-8-[6,9,17,19,21-pentahydroxy-5,13-bis(4-hydroxyphenyl)-4,12,14-trioxapentacyclo[11.7.1.0²,¹¹.0³,⁸.0¹⁵,²⁰]henicosa-2,8,10,15,17,19-hexaen-7-yl]-3,4-dihydro-2h-1-benzopyran-4-yl]acetic acid