7-[(4aS,7aS)-1,2,3,4,4a,5,7,7a-octahydropyrrolo[3,4-b]pyridin-6-yl]-1-cyclopropyl-8-fluoro-6-methoxy-4-oxoquinoline-3-carboxylic acid; UNII-8175L96X3L; 8-Fluoro-6-methoxy Moxifloxacin Dihydrochloride; 8-Fluoro-6-methoxymoxifloxacin; Moxifloxacin hydrochloride specified impurity D [EP]; Moxifloxacin Imp. D (EP/BP) as diHCl salt