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(2014/03/21)di-tert-butyl dicarbonate
1-cyclopropyl-6-fluoro-1,4-dihydro-8-methoxy-7-(2-methyl-1-piperazinyl)-4-oxo-3-quinolinecarboxylic acid
2,2-dimethylpropanoic anhydride
(RS)-2-methylpiperazine
3-methyl-piperazine-1-carboxylic acid tert-butyl ester