Using CCOC(=O)CBr, Cc1sc(Nc2ccccn2)nc1-c1cn[nH]c1 to produce CCOC(=O)Cn1cc(-c2nc(Nc3ccccn3)sc2C)cn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.