155111-89-0 2,4-Pentadienoic acid, 5-(decahydro-1,3,4-trihydroxy-2,6,8-trimethyl-1-naphthalenyl)- 5-(1,3,4-Trihydroxy-2,6,8-trimethyldecalin)-2,4-pentadienoic acid Hynapene A