英文别名2-(5-(tert-Butyl)-2-hydroxy-4-(4-oxo-1,4-dihydroquinoline-3-carboxamido)phenyl)-2-methylpropanoic acid; 2-[5-tert-butyl-2-hydroxy-4-[(4-oxo-1H-quinoline-3-carbonyl)amino]phenyl]-2-methylpropanoic acid; Ivacaftor carboxylate; VRT-842917; Ivacaftor Impurity 1; Ivacaftor METABOLITE M6 
