1,4-Benzenediol, 2-((1,2,3,4,4a,7,8,8a-octahydro-1,2,4a,5-tetramethyl-1-naphthalenyl)methyl)-, 4-acetate, (1R-(1alpha,2beta,4abeta,8aalpha))- 122143-92-4 Avarol monoacetate Monoacetyl avarol