1-[(2R,3R)-3-[4-(4-{azanylidene[(2-methylprop-2-yl)oxy]methyl}phenyl)-1,3-thiazol-2-yl]-2-(2,5-difluorophenyl)-2-hydroxybutyl]-4-{4-oxo-5-[3-(3-oxo-5-aza-2-oxahex-1-yl)pyridin-2-yl]-5-aza-3-oxahex-2-yl}-1,2,4-triazol-4-ium iodide dimethanesulfonic acid