(Z)-Methyl 3-(((4-(N-methyl-2-(piperazin-1-yl)acetamido)phenyl)amino)(phenyl)methylene)-2-oxoindoline-6-carboxylate ( Nintedanib Impurity)

(Z)-Methyl 3-(((4-(N-methyl-2-(piperazin-1-yl)acetamido)phenyl)amino)(phenyl)methylene)-2-oxoindoline-6-carboxylate ( Nintedanib Impurity)