16964-48-0 6a,7,10,10a-Tetrahydro-1-hydroxy-6,6-dimethyl-3-pentyl-6H-dibenzo(b,d)pyran-9(8H)-one 9H-Dibenzo(b,d)pyran-9-one, 6,6a,7,8,10,10a-hexahydro-1-hydroxy-6,6-dimethyl-3-pentyl-, trans-(+-)- Thc-9-one