Using CC(C)(C)OC(=O)n1c(-c2ccc(Cl)c3c2C(=O)NC3)cc2ccccc21 to produce O=C1NCc2c(Cl)ccc(-c3cc4ccccc4[nH]3)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.