(3S,5S)-3-异丙基-2-氧代-5-[(2S,4S)-四氢-4-异丙基-5-氧代-2-呋喃基]-1-吡咯烷羧酸叔丁酯

(3S,5S)-3-(1-Methylethyl)-2-oxo-5-[(2S,4S)-tetrahydro-4-(1-methylethyl)-5-oxo-2-furanyl]-1-pyrrolidinecarboxylic acid tert-butyl ester