Using COC(=O)C(O)Cc1cc(Br)c(O)c(Br)c1, BrCc1ccc2ccccc2c1 to produce O=C(O)C(O)Cc1cc(Br)c(OCc2ccc3ccccc3c2)c(Br)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.