Using CC(C)(C)OC(=O)NCCCN1CCN(CC(=O)OC(c2ccccc2)c2ccccc2)C(=O)C1=O to produce NCCCN1CCN(CC(=O)OC(c2ccccc2)c2ccccc2)C(=O)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.