Using FC(F)(F)C1(c2nc3cc(Cl)c(Cl)cc3[nH]2)C=CCO1 to produce FC(F)(F)C1(c2nc3cc(Cl)c(Cl)cc3[nH]2)CCCO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.