Using CC(C)(C)OC(=O)N1CCC(Nc2ccccc2Cl)CC1, CI to produce CN(c1ccccc1Cl)C1CCN(C(=O)OC(C)(C)C)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.