5-<<(methoxyethyl)<(methoxyethoxy)ethyl>amino>methyl>thieno<2,3-b>thiophene-2-sulfonamide
5-[(2-Methanesulfonyl-ethylamino)-methyl]-thieno[2,3-b]thiophene-2-sulfonic acid amide
5-(2-methoxyethylaminomethyl)thieno[2,3-b]thiophene-2-sulfonamide
5-(2-hydroxyethylaminomethyl)thieno[2,3-b]thiophene-2sulfonamide