154445-08-6 2,4-Pentadienoic acid, 5-(5,6,7,8-tetrahydro-5-hydroxy-2,6,8-trimethyl-1-naphthalenyl)- 5-(5-Hydroxy-2,6,8-trimethyl-5,6,7,8-tetrahydronaphthalene)-2,4-pentadienoic acid Arohynapene A