Using Cc1ccc(OC2CN(C(=O)C3CCCN(C(=O)OCc4ccccc4)CC3)C2)cn1, O=C1CCC1 to produce Cc1ccc(OC2CN(C(=O)C3CCCN(C4CCC4)CC3)C2)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.