Using NC(=O)c1cccc2nc(-c3ccc(-c4ccccn4)cc3F)oc12 to produce NC(=O)c1cccc2nc(-c3ccc(C4CCCCN4)cc3F)oc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.