tert-butyl 3-aMino-1H,3aH,4H,5H,6H,6aH-pyrrolo[3,4-c]pyrazole-5-carboxylate

tert-butyl 3-amino-3a,4,6,6a-tetrahydropyrrolo[3,4-c]pyrazole-5(1H)-carboxylate