Using CCOC(=O)CN1C(=O)[C@@H](NC(=O)OC(C)(C)C)CC(O)C2CCCCC21 to produce CCOC(=O)CN1C(=O)[C@@H](NC(=O)OC(C)(C)C)CCC2CCCCC21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.