1,4-Phenanthrenedione, 2-(2-(acetyloxy)-1-methylethyl)-4b,5,6,7,8,8a,9,10-octahydro-3-hydroxy-10-methoxy-4b,8,8-trimethyl- 109974-33-6 16-AC-7-MR 16-Acetoxy-7-methoxyroyleanone 16-Acetoxy-7alpha-methoxyroyleanone