Using COC(=O)C(C)(O)C(=O)C(C)Br, Oc1ccc(Oc2nc3ccccc3s2)cc1 to produce COC(=O)C(C)(O)C(=O)C(C)Oc1ccc(Oc2nc3ccccc3s2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.