Using COC(=O)c1cc2cc(OC)c(OC)cc2c(-c2cccc(Br)n2)c1C(=O)OC to produce COc1cc2cc(CO)c(CO)c(-c3cccc(Br)n3)c2cc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.