(3aR,4S,5R,6aS)-4-[[[(1,1-二甲基乙基)二甲基硅基]氧基]甲基]六氢-5-[(四氢-2H-吡喃-2-基)氧基]-2H-环戊并[b]呋喃-2-酮

3,4-二氢-2H-吡喃

3α,5α-dihydroxy-2β-(benzyloxymethyl)cyclopentane-1α-acetic acid γ-lactone 3-tetrahydropyran-2-yl ether

methyl 2-(5-oxocyclopenten-1-yl)acetate

2-methoxycarbonylmethyl-4-hydroxy-2-cyclopenten-1-one