α-<(cyclopropylamino)methylene>-2,3,4,5-tetrafluoro-β-oxobenzenepropanoate

1-cyclopropyl-5,6,7,8-tetrafluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic acid,ethyl ester

苄胺

丙二酸叔丁基乙酯

原甲酸三乙酯