5945-41-5 Azuleno(6,5-b)furan-2,5-dione, 3,3a,4,4a,7a,8,9,9a-octahydro-4-hydroxy-4a,8-dimethyl-3-methylene-, (3aS-(3aalpha,4beta,4abeta,7aalpha,8alpha,9abeta))- Mexicanin-I NSC 136050