CC(C)C[C@H]1OC(=O)[C@H](C(C)C)N(C)C(=O)[C@@H](CC(C)C)OC(=O)[C@H](C(C)C)N(C)C(=O)[C@@H](CC(C)C)OC(=O)[C@H](C(C)C)N(C)C1=O	MK1688