Prucalopride Succinate Impurity: (6-{[(5-chloro-7-{[1-(3-methoxypropyl)piperidin-4-yl]carbamoyl}-2,3-dihydro-1-benzofuran-4-yl)amino]oxy}-3,4,5-trihydroxyoxane-2-carboxylic acid) (N-glucuronide impurity).