CC(C)C[C@@H]1NC(=O)[C@@H]2C[C@@H](O)CN2C(=O)[C@@H](CC(C)C)NC(=O)[C@@H]2C[C@@H](O)CN2C1=O	cyclo-( L-leucyl-trans-4-hydroxy-L-prolyl-D-leucyl-trans-4-hydroxy-L-proline)