Using COc1cc(O)c2cc(-c3cn4nc(C)ccc4n3)oc2c1, BrCc1csc(-c2ccccc2)n1 to produce COc1cc(OCc2csc(-c3ccccc3)n2)c2cc(-c3cn4nc(C)ccc4n3)oc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.