Using COc1ccc(C=O)cc1, Brc1cc(-c2ccncc2)sc1-c1nnc[nH]1 to produce COc1ccc(C(O)c2cc(-c3ccncc3)sc2-c2nnc[nH]2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.