Using C=CC(=O)N(CCNC(=O)OC(C)(C)C)C1CCN(Cc2ccccc2)CC1 to produce CC(C)(C)OC(=O)N1CCC(=O)N(C2CCN(Cc3ccccc3)CC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.