10H,20H-5,9:15,19-Dimethenodibenzo[a,i]cyclohexadecene-10,20-dione,1,11-bis(2,4-dihydroxyphenyl)-1,2,4a,10a,11,12,14a,20a-octahydro-6,8,16,18-tetrahydroxy-3,13-dimethyl-,[1R-(1R*,4aS*,10aS*,11R*,14aS*,20aS*)]-