(3aS,4S,6R,6aR)-methyl 6-((tert-butoxycarbonyl)amino)-3-(pentan-3-yl)-4,5,6,6a-tetrahydro-3aH-cyclopenta[d]isoxazole-4-carboxylate
(3aS,4S,6R,6aR)-methyl 6-((tert-butoxycarbonyl)amino)-3-(pentan-3-yl)-4,5,6,6a-tetrahydro-3aH-cyclopenta[d]isoxazole-4-carboxylate