text: <unk>  hydrochloride (trade name Raxar, Glaxo Wellcome) was an oral broad-spectrum fluoroquinolone antibacterial agent used to treat bacterial infections.<unk>  was withdrawn world wide from markets in 1999, owing to its side effect of lengthening the QT interval on the electrocardiogram, leading to cardiac events and sudden death.
option_0: Grepafloxacin
option_1: Telithromycin
option_2: Difloxacin
option_3: Azithromycin 
option_4: Gemifloxacin
option_5: Gemifloxacin mesylate
option_6: Pefloxacin
option_7: Delafloxacin