izopentil-4-2-[5-cijano-1,2,3,6-tetrahidro-1-(2-izopropoksietoksi-karbonilmetil)-4-metil-2,6-diokso-3-piridiliden]hidrazinobenzoat
metyl(3aR,4R,7aR)-2-metyl-4-(1S,2R,3-triacetoxipropyl)-3a,7a-dihydro-4H-pyrano[3,4-d]oxazol-6-karboxylat