68026-87-9 AA 57 AA-57 Pentaleno(1,3a-c)pyran-5-carboxylic acid, 1,2,4,4a,6a,7-hexadyro-1-(chloromethyl)-7,8-dimethyl-1-hydroxy-2-oxo- Pentaleno(1,6a-c)pyran-5-carboxylic acid, 1-(chloromethyl)-1,2,4,4a,6a,7-hexahydro-1-hydroxy-7,8-dimethyl-2-oxo-, (1S-(1alpha,4aalpha,6abeta,7alpha,9aR*))-