Using Nc1ncnc2oc(-c3ccccc3)c(-c3ccccc3)c12, CC1(CBr)OCCO1 to produce CC1(CNc2ncnc3oc(-c4ccccc4)c(-c4ccccc4)c23)OCCO1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.