Using CCOC(=O)CCN(CC(=O)OCC)C(=O)CCCCCNC(=O)OCc1ccccc1 to produce CCOC(=O)C1CN(C(=O)CCCCCNC(=O)OCc2ccccc2)CC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.