Using CCOC(=O)N1CCc2sc(C(=O)C(F)(F)F)c(Br)c2CC1, c1ccc([PH+](c2ccccc2)c2ccccc2)cc1 to produce C=C(c1cc2c(s1)CCN(C(=O)OCC)CC2)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.