6-amino-1-cyclopropyl-8-methyl-7-(5,6,7,8-tetrahydroisoquinolinyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid
6-amino-1-cyclopropyl-8-methyl-7-(5,6,7,8-tetrahydroisoquinolinyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid