for the following products
(S)-9,10-Difluoro-3-methyl-7-oxo-2,3-dihydro-7H-pyridine-(1,2,3-de)-1,4-benzoxazine-6-carboxylic acid | 7H-Pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid, 9,10-difluoro-2,3-dihydro-3-methyl-7-oxo-(3S)- | 8,9-Difluoro-3-methyl-6-oxo-2,3-dihydro-6H-1-oxa-3alpha-aza-phenalene-5-carboxylic acid | Levofloxacin carboxylic acid and Levofloxacin acid
