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