Using COC(=O)Cc1cc(Br)c(Oc2ccc(OC)cc2)c(Br)c1 to produce O=C(O)Cc1cc(Br)c(Oc2ccc(O)cc2)c(Br)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.