65596-26-1 BACCHOTRICUNEATIN B NSC299116 Spiro[furan-3(2H),7'(8'H)-[1H]naphtho[1,8a-c]furan]-2,3'(5'H)-dione, 5-(3-furanyl)-4,5,6',6'a,9',10'-hexahydro-8'-methyl-, [6'aS-[6'a.alpha.,7'.beta.(S*),8'.beta.,10'aR*]]-