2-Propenamide, N-[3-[[2-[[3-fluoro-4-(4-methyl-1-piperazinyl)phenyl]amino]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]oxy]phenyl]-, (2Z)-2-butenedioate (1:1)

2-Propenamide, N-[3-[[2-[[3-fluoro-4-(4-methyl-1-piperazinyl)phenyl]amino]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]oxy]phenyl]-, (2Z)-2-butenedioate (1:1)