英文同义词:
2alpha-hydroxy-3beta-acetyloxy-betulic acid;(2alpha,3beta)-3-(Acetyloxy)-2-hydroxy-lup-20(29)-en-28-oic acid;2alpha-Hydroxy-3beta-O-acetylbetulinic acid;2alpha-hydroxy-3beta-acetoxy-19beta-hydrogen-lup-20(29)-en-28-oic acid;Lup-20(29)-en-28-oic acid, 3-(acetyloxy)-2-hydroxy-, (2α,3β)-