Using Cn1c2cc(F)ccc2c2c(C(=O)N3CCCC3)n[nH]c(=O)c21, Brc1ncccn1 to produce Cn1c2cc(F)ccc2c2c(C(=O)N3CCCC3)nn(-c3ncccn3)c(=O)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.