Using Oc1ccc(-c2c(Br)ccc3sc4ccccc4c23)cc1, COC(=O)CBr to produce COC(=O)COc1ccc(-c2c(Br)ccc3sc4ccccc4c23)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.