(3aR,4S,7aS)-6-cyano-2,2-dimethyl-3a,4,5,7a-tetrahydrobenzo-[d][1,3]dioxol-4-yl acetate

2-[(3aR,4S,5S,7aS)-4-hydroxy-2,2-dimethyl-3a,4,5,7a-tetrahydrobenzo[d][1,3]dioxol-5-yl]malononitrile

(3aR,4S,5R,7aS)-methyl 4-hydroxy-2,2-dimethyl-3a,4,5,7atetrahydrobenzo[d][1,3]dioxole-5-carboxylate