Using Oc1cc(-c2c3ccccc3c(Br)c3sc4ccccc4c23)cc(Br)c1O, O=C([O-])[O-] to produce COc1c(O)cc(-c2c3ccccc3c(Br)c3sc4ccccc4c23)cc1Br, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.