Using CCOC(=O)/C=C/c1nc(-c2ccc(C(F)(F)F)cc2)ccc1N to produce CCOC(=O)CCc1nc(-c2ccc(C(F)(F)F)cc2)ccc1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.