92837-05-3 L-Proline, 1-(4,4,5,5-tetradehydro-N2-L-threonyl-L-lysyl)-, (11beta,17alpha)- Thr-dah-pro Threonyl-(2,6-diamino-4-hexynoate)proline Threonyl-2,6-diamino-4-hexynoate proline