Using Cn1nccc1B1OCC(C)(C)CO1, COC(=O)c1sc(Br)c(Br)c1O to produce COC(=O)c1sc(-c2ccnn2C)c(Br)c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.