Using CCOc1cc(C=O)ccc1OCc1ccccc1, O=C1COc2cc(O)ccc21 to produce CCOc1cc(C=C2Oc3cc(O)ccc3C2=O)ccc1OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.