Using CC(C)(C)OC(=O)NN1CCN(S(=O)(=O)c2ccc3cc(Cl)ccc3c2)CC1=O to produce NN1CCN(S(=O)(=O)c2ccc3cc(Cl)ccc3c2)CC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.