1,6-Naphthyridine,6-[[7-[(4-fluorophenyl)methyl]-7,8-dihydro-9-hydroxy-8-oxo-6H-pyrrolo[3,4-g]quinolin-5-yl]carbonyl]-5,6,7,8-tetrahydro-, mono(trifluoroacetate)(salt) [ 871469-96-4 ]