IUPAC:6,9,17,19,21-pentahydroxy-5,13-bis(4-hydroxyphenyl)-4,12,14-trioxapentacyclo[11.7.1.0^{2,11}.0^{3,8}.0^{15,20}]henicosa-2,5,8,10,15,17,19-heptaen-7-one
IUPAC:6,9,17,19,21-pentahydroxy-5,13-bis(4-hydroxyphenyl)-4,12,14-trioxapentacyclo[11.7.1.0^{2,11}.0^{3,8}.0^{15,20}]henicosa-2,5,8,10,15,17,19-heptaen-7-one