6-[3-[[4-[5-[[2-[tert-butyl(dimethyl)silyl]oxy-2-(8-hydroxy-2-oxo-1H-quinolin-5-yl)ethyl]amino]pent-1-ynyl]-2-methylphenyl]carbamoyl]phenyl]sulfonyl-4-(3-methoxyanilino)-8-methylquinoline-3-carboxamide