methyl (1S,4S,5R,6S)-4,5-(isopropylidenedioxy)-7-azabicyclo[4.1.0]hept-2-ene-7-carboxylate

((3aR,4S,7R,7aS)-7-hydroxy-2,2-dimethyl-3a,4,7,7a-tetrahydro-1,3-benzodioxol-4-yl)-carbamic acid methyl ester