Using CCCCCCCCCCCC1CC(=O)[C@@H](CCCCCC)C(=O)O1 to produce CCCCCCCCCCC[C@@H]1C[C@H](O)[C@H](CCCCCC)C(=O)O1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.