85329-59-5 Spiro(cyclohexane-1,4'(3'H)-(1H-7,9a)methanocyclohepta(c)pyran)-2-carboxaldehyde, hexahydro-5'-hydroxy-3,3-dimethyl-8'-methylene-1',9'-dioxo, (4R-(4'alpha(R*),4'aalpha,5'beta,7'beta,9'abeta))- Trichorabdal A