Using CCOCC, CCCC=CC(CNc1ccc(CCC(=O)O)cc1)C1CCCCC1 to produce CCCC=CC(CNc1ccc(CCC(=O)OC)cc1)C1CCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.