Using Cn1c(=O)oc2cc(C=CCN3CCN(c4ccc(F)cc4)CC3)ccc21 to produce Cn1c(=O)oc2cc(CCCN3CCN(c4ccc(F)cc4)CC3)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.