Using CCOC(=O)C(CC=C(F)F)(CC=C(F)F)c1ccc(N)cc1 to produce CCOC(=O)C(CCC(F)F)(CCC(F)F)c1ccc(N)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.