Using COC(=O)CC(=O)OC, O=C1c2cc(F)c(F)cc2C(=O)c2cc3ccccc3cc21 to produce COC(=O)C(C(=O)OC)c1cc(F)cc2c1C(=O)c1cc3ccccc3cc1C2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.