Using OCCC1CCCCC1, O=C(CCl)CC(=O)OCCC(c1ccccc1)c1ccccc1 to produce O=C(COCCC1CCCCC1)CC(=O)OCCC(c1ccccc1)c1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.