20555-01-5 2,2-Bis(3,4-dihydroxyphenyl)-3,3,4,4-tetrahydro-4,8-bi[2H-1-benzopyran]-3,3,5,5,7,7-hexol 20555-02-6 (3aR,7aα,9aα)-3aα,4,4a,5,6,7,7a,8,9,9a-Decahydro-7α-hydroxy-4aβ,8β-dimethyl-3-methyleneazuleno[6,5-b]furan-2,5-dione 20555-03-7 (3aS,6aβ,9bβ)-3aβ,4,5,6,6a,7,8,9,9a,9b-Decahydro-7β,9β-dihydroxy-6α,9aα-dimethyl-3-methyleneazuleno[4,5-b]furan-2(3H)-one 20555-06-0 Azuleno[4,5-b]furan-2(3H)-one,7-(acetyloxy)- decahydro-9-hydroxy-6,9a-dimethyl-3- methylene-,(3aS,6S,6aS,7S,9R,9aS,9bR)-