Using O=C(COc1ccc2[nH]c(=O)ccc2c1)NNC(=O)Cc1ccc(Cl)c(Cl)c1 to produce O=c1ccc2cc(OCc3nnc(Cc4ccc(Cl)c(Cl)c4)o3)ccc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.