Using O=C(O)c1ccc(O)c(C(=O)c2ccccc2)c1, CC(=O)OC(C)=O to produce CC(=O)Oc1ccc(C(=O)O)cc1C(=O)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.