Using CN1C(=O)C[C@]2(c3ccccc3)CCCC[C@H]2C1=O to produce CN1C(=O)C[C@]2(c3ccccc3)CCCC[C@@H]2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.