Synonyms: NSC291618;AC1L49S8;NSC-291618;3-Oxo-6betaH-eudesm-1,4,11-trien-6,13-olide;(3aS,5aS,9bS)-5a,9-dimethyl-3-methylidene-3a,4,5,9b-tetrahydrobenzo[g][1]benzofuran-2,8-dione;66726-11-2;Naphtho[1,8(3H,4H)-dione, 3a,5,5a,9b-tetrahydro-5a,9-dimethyl-3-methylene-, (3a.alpha.,5a.beta.,9b.beta.)-