Using CC(C)(C)C(=O)ON1CCC(C(CCO)c2ccccc2)CC1 to produce CC(C)(C)C(=O)ON1CCC(C(CC=O)c2ccccc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.