Using Cn1ncnc1Br, CCCC[Sn](CCCC)(CCCC)c1cc(C2OCCCO2)c2occc2c1 to produce Cn1ncnc1-c1cc(C2OCCCO2)c2occc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.