Using Cc1c(Br)ccc(OC(=O)C(C)(C)C)c1C(=O)O, COc1cc(C)cc(OC)c1OC to produce COc1cc(C)c(C(=O)c2c(OC(=O)C(C)(C)C)ccc(Br)c2C)c(OC)c1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.