6-{[1-(benzylsulfonyl)piperidin-4-yl]amino}-3-(carboxymethoxy)thieno[3,2-b][1]benzothiophene-2-carboxylic acid
6-{[1-(benzylsulfonyl)piperidin-4-yl]amino}-3-(carboxymethoxy)thieno[3,2-b][1]benzothiophene-2-carboxylic acid