67172-84-3

2-(1a,2,3,3a,8b,8c-Hexahydro-6-hydroxy-1,1,3a-trimethyl-4-oxa-1H-benzo[f]cyclobut[cd]inden-7-yl)-2,3-dihydro-5,7-dihydroxy-4H-1-benzopyran-4-one