(1R,5R)-1-Methyl-3-phenyl-2,4-dioxa-bicyclo[3.3.1]non-6-ene

Methanesulfonic acid (3aR,4R,6S,7aR)-6-hydroxy-2,2,6-trimethyl-hexahydro-benzo[1,3]dioxol-4-yl ester