Using CC(=O)C(C)N1CCCC[C@H](NC(=O)OC(C)(C)C)C1=O, CO to produce CC(C(=O)O)N1CCCC[C@H](NC(=O)OC(C)(C)C)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.