7-(4-Ethoxycarbonyl-piperazin-1-yl)-6-fluoro-1-(4-fluoro-phenyl)-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid

哌嗪

6,7-二氟-1-(4-氟苯基)-4-氧代-1,4-二氢喹啉-3-羧酸

2,4,5-三氟苯甲酸

2,4,5-三氟苯甲酰乙酸乙酯