18a-Oleanan-28-oic acid, 3b,19b-dihydroxy-, g-lactone (6CI,7CI,8CI); 2H-1,4a-(Epoxymethano)picene, oleanan-28-oicacid deriv.; 28-Oxyallobetulin; Allobetulinlactone; Oxyallobetulin
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