Using CCO, O=C(O)C(c1ccccc1)c1c(O)c2ccccc2oc1=O to produce CCOC(=O)C(c1ccccc1)c1c(O)c2ccccc2oc1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.