2,5-Cyclohexadiene-1,4-dione, 2-((1,2,3,4,4a,7,8,8a-octahydro-1,2,4a,5-tetramethyl-1-naphthalenyl)methyl)-, (1R-(1-alpha,2-beta,4a-beta,8a-alpha))- 55303-99-6 Avarone BRN 1991429 NSC 607774