Using O=C(O)c1ccc2c(c1)-c1cc(Cl)c3cccnc3c1NS2(=O)=O, NC(CO)CO to produce O=C(NC(CO)CO)c1ccc2c(c1)-c1cc(Cl)c3cccnc3c1NS2(=O)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.