Showing structure for 3-(3,5-dihydroxyphenyl)-4,10,18-tris(4-hydroxyphenyl)-5,9-dioxapentacyclo[9.8.1.0²,⁶.0⁸,²⁰.0¹²,¹⁷]icosa-1,6,8(20),12,14,16-hexaene-14,16-diol