Using CC(=O)OC(C)=O, COC(=O)C1(O)CCc2c(OC)ccc(OC)c2C1 to produce COC(=O)C1(OC(C)=O)CCc2c(OC)ccc(OC)c2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.