Using CC(C)(C)OC(=O)N1CCNCC1, COc1ccc(C=O)cc1C(C)(C)C to produce COc1ccc(CN2CCN(C(=O)OC(C)(C)C)CC2)cc1C(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.