IUPAC:(1R,5R,6R,13S)-5,13-bis(3,4-dihydroxyphenyl)-4,12,14-trioxapentacyclo[11.7.1.0^{2,11}.0^{3,8}.0^{15,20}]henicosa-2(11),3(8),9,15(20),16,18-hexaene-6,9,17,19,21-pentol
IUPAC:(1R,5R,6R,13S)-5,13-bis(3,4-dihydroxyphenyl)-4,12,14-trioxapentacyclo[11.7.1.0^{2,11}.0^{3,8}.0^{15,20}]henicosa-2(11),3(8),9,15(20),16,18-hexaene-6,9,17,19,21-pentol