5-[(3aS,4S,6aR)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]-N-[2-[2-[2-[2-(3-hydrazino-3-oxo-propoxy)ethoxy]ethoxy]etho xy]ethyl]pentanamide 1 * 1 g