1-Naphthalenecarboxylic acid, 5-(2-(3-furanyl)ethyl)decahydro-5,8-dihydroxy-1,4a,6-trimethyl-, (1S-(1-alpha,4a-alpha,5-beta,6-beta,8-alpha,8a-beta)- 564-12-5 6-beta,9-Dihydroxy-15,16-epoxylabda-13(16),14-dien-19-oic acid Labda-13(16),14-dien-19-oic acid, 6-beta,9-dihydroxy-15,16-epoxy- Marrubic acid Marrubinsaeure [German] NSC 41312