Using Cn1c(Nc2c(Cl)cccc2Cl)nc2ccc(N)c(C(N)=O)c21, O=C(O)c1ccoc1 to produce Cn1c(Nc2c(Cl)cccc2Cl)nc2ccc3nc(-c4ccoc4)[nH]c(=O)c3c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.