Showing structure for 13-(3,4-dihydroxyphenyl)-5-(4-hydroxyphenyl)-4,12,14-trioxapentacyclo[11.7.1.0²,¹¹.0³,⁸.0¹⁵,²⁰]henicosa-2(11),3(8),9,15,17,19-hexaene-6,9,17,19,21-pentol