Synonyms: 7H-Pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylicacid,10-(8-amino-6-azaspiro[3.4]oct-6-yl)-9-fluoro-2,3-dihydro-3-methyl-7-oxo-,[S-(R*,R*)]-; 6-Azaspiro[3.4]octane,7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid deriv.; DV 7751; DV 7751a