Using Cc1nc(C)c(B2OC(C)(C)C(C)(C)O2)s1, COc1ccc(Br)c(C=O)c1 to produce COc1ccc(-c2sc(C)nc2C)c(C=O)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.