Using CCOC(=O)CCc1oc2ccccc2c1C(=O)c1cc(I)c(O)c(I)c1 to produce O=C(O)CCc1oc2ccccc2c1C(=O)c1cc(I)c(O)c(I)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.