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Olean-12-eno[2,3-c][1,2,5]oxadiazol-28-oic acid

gamma-Octanoic lactone

Octanoic hydrazide

Oleana-2,12-dieno[2,3-d]isoxazol-28-oic acid

Oleana-2,12-dieno[2,3-d]isoxazol-28-oic acid phenylmethyl ester