Using Brc1sc(-c2ccccc2)nc1-c1ccncc1, COc1cc(B2OC(C)(C)C(C)(C)O2)cnc1N to produce COc1cc(-c2sc(-c3ccccc3)nc2-c2ccncc2)cnc1N, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.