Synonyms: 1693-61-4;(+).beta.-Desmotroposantonin methyl ether;AC1L3A16;(+)-beta-Desmotroposantonin methyl ether;8-methoxy-3,6,9-trimethyl-3a,4,5,9b-tetrahydro-3H-benzo[g][1]benzofuran-2-one;8-methoxy-3,6,9-trimethyl-3a,4,5,9b-tetrahydronaphtho[1,2-b]furan-2(3H)-one