Using CCOP(=O)(OCC)C(F)(F)Br, C=CCc1c(O)cc(C)c2c1ccn2C(=O)OC(C)(C)C to produce C=CCc1c(OC(F)F)cc(C)c2c1ccn2C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.