IUPAC:5-(3,4-dihydroxyphenyl)-13-(4-hydroxyphenyl)-4,12,14-trioxapentacyclo[11.7.1.0^{2,11}.0^{3,8}.0^{15,20}]henicosa-2(11),3(8),9,15,17,19-hexaene-6,9,17,19,21-pentol
IUPAC:5-(3,4-dihydroxyphenyl)-13-(4-hydroxyphenyl)-4,12,14-trioxapentacyclo[11.7.1.0^{2,11}.0^{3,8}.0^{15,20}]henicosa-2(11),3(8),9,15,17,19-hexaene-6,9,17,19,21-pentol