Using CC(C)(ON1C(C)(C)CC(OC(=O)c2ccccc2)CC1(C)C)ON1C(C)(C)CC(OC(=O)c2ccccc2)CC1(C)C to produce CC(C)(ON1C(C)(C)CC(O)CC1(C)C)ON1C(C)(C)CC(O)CC1(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.