ethyl(N-1-methyl-4-ethoxy carbonyl pyrazol-5-sulfonyl carbamate)

n-(ethoxycarbonyl)-4-ethoxycarbonyl-1-methylpyrazole-5-sulfonamide

5-[[(Ethoxycarbonyl)amino]sulfonyl]-1-methyl-1H-pyrazole-4-carboxylic acid ethyl ester