Glibenclamide Impurity A

4-[2-(5-Chloro-2-methoxybenzamido)ethyl]phenylsulfonamide, 5-Chloro-2-methoxy-N-[2-(4-sulfamoylphenyl)ethyl]benzamide|N-[2-[4-(Aminosulfonyl)phenyl]ethyl]-5-chloro-2-methoxy-benzamide;