Using CCOC(=O)C(F)(F)Br, CCCC1CCC(C2CCC(C=O)CC2)CC1 to produce CCCC1CCC(C2CCC(C(O)C(F)(F)C(=O)OCC)CC2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.