Using CC1(CCC2=C3CCC4(C)C(=O)CCC4C3OCC2=O)OCCO1 to produce CC(=O)CCC1=C2CCC3(C)C(=O)CCC3C2OCC1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.