(3S,4S)-2-hydroxy-5-oxo-1-(5-(trimethylsilyl)pent-4-yn-1-yl)pyrrolidine-3,4-diyl diacetate

(3S,4S)-3,4-diacetoxy-1-<5-(trimethylsilyl)-4-pentynyl>-2,5-pyrrolidinedione

(1R)-(1β,2α,8β,8aβ)-1,2-diacetoxy-8-((2,2-dimethylpropanoyl)oxy)hexahydro-3(2H)-indolizinone

(1R)-(1β,2α,8β,8aβ)-2,8-bis<(2,2-dimethylpropanoyl)oxy>-1-hydroxyhexahydro-3(2H)-indolizinone