Using COC(=O)c1ccc2nnc(C(=O)NCc3ccc(Cl)cc3)c(O)c2c1 to produce O=C(NCc1ccc(Cl)cc1)c1nnc2ccc(CO)cc2c1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.