Using CCCCCC[C@@H](C)O, O=C(O)C1CCc2cc(OCc3ccccc3)ccc2C1 to produce CCCCCC[C@H](C)OC(=O)C1CCc2cc(OCc3ccccc3)ccc2C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.