Using COc1ccc(Oc2c(I)cc(OC(=O)c3ccccc3)cc2I)cc1C(C)C to produce COc1ccc(Oc2c(I)cc(O)cc2I)cc1C(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.