Using CN1CCC(N(C)C(=O)C2CN(C(=O)OC(C)(C)C)c3ccccc32)CC1 to produce CN1CCC(N(C)C(=O)C2CNc3ccccc32)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.