Using COC(=O)C(OC(C)(C)C)c1c(-c2ccc(Cl)cc2)c2ccn(Cc3ccccc3)c2c(=O)n1C to produce COC(=O)C(OC(C)(C)C)c1c(-c2ccc(Cl)cc2)c2cc[nH]c2c(=O)n1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.