Using CCCCCCN(Cc1ccccc1)C(=O)Cc1cccc(OCc2ccccc2C(=O)OC)c1 to produce CCCCCCN(Cc1ccccc1)C(=O)Cc1cccc(OCc2ccccc2C(=O)O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.