Using O=C([O-])[O-], c1ccc2c(C3CCCNC3)c[nH]c2c1 to produce CC(C)(C)OC(=O)N1CCCC(c2c[nH]c3ccccc23)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.