120750-70-1 4-Polyethylene glycol-sulfonylurea-piretanide Pir-peg Poly(oxy-1,2-ethanediyl), alpha-(2-((((4-(2-(aminosulfonyl)-4-carboxy-6-(1H-pyrrol-1-yl)phenoxy)phenyl)amino)thioxomethyl)amino)ethyl)-omega-hydroxy-