Using COC(=O)c1ccc(CC(=O)c2cc(Br)c(OC)cc2OC)cc1 to produce COC(=O)c1ccc(CC(=O)c2cc(Br)c(OC)cc2O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.