Using COc1ccc(-c2nc(SCCBr)sc2-c2ccc(OC)cc2)cc1 to produce C=CSc1nc(-c2ccc(OC)cc2)c(-c2ccc(OC)cc2)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.