N-[(E)-4-(trimethylsilyl)-3-bromo-3-butenyl]-5-hydroxypyrrolid-2one

2-(trimethylsilyloxy)-1-pentene

methyl 2-(2-oxopentyl)pyrrolidine-1-carboxylate

2-戊酮

8-butyryloctahydro-4,7-epoxyindolizin-4-ium methanesulfonate