Using CCOC(=O)CN(C(=O)OC(C)(C)C)C1CCN(C2CCN(Cc3ccccc3)CC2)CC1 to produce CCOC(=O)CN(C(=O)OC(C)(C)C)C1CCN(C2CCNCC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.