Synonyms: Cyclopenta[f][1]benzopyran-5(3H)-one,4a,7,8,9,9a,9b-hexahydro-8-hydroxy-2-methyl-3-(1-nonenyl)-, [3a(E),4aa,8a,9aa,9bb]-(+)-; Cyclopenta[f][1]benzopyran-5(3H)-one,4a,7,8,9,9a,9b-hexahydro-8-hydroxy-2-methyl-3-(1E)-1-nonenyl-,(3S,4aR,8R,9aS,9bS)- (9CI); Penostatin A