Synonyms: 2H,10H-Benzo[1,2-b:3,4-b']dipyran-2,10-dione,3,4,8,9-tetrahydro-5-methoxy-8,9-dimethyl-6-(3-methyl-2-butenyl)-4-pentyl-(8CI); 2H,10H-Benzo[1,2-b:3,4-b']dipyran-2,10-dione,3,4,8,9-tetrahydro-5-methoxy-8,9-dimethyl-6-(3-methyl-2-butenyl)-4-pentyl-,[4R-(4a,8b,9a)]-; Papuanolide