Using COc1cc(Cl)c(C(=O)NNC(=O)Cc2cccc(O)c2)c(OC)c1 to produce O=C(Cc1cccc(O)c1)NNC(=O)c1c(O)cc(O)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.