82611-89-0 Azuleno(6,5-b)furan-2,5-dione, 3,3a,4,4a,7a,8,9,9a-octahydro-7a-hydroxy-8-methyl-3-methylene-, (3aR,4aR,7aS,8R,9aR)- Azuleno(6,5-b)furan-2,5-dione, 3,3a,4,4a,7a,8,9,9a-octahydro-7a-hydroxy-8-methyl-3-methylene-, (3aR-(3aalpha,4aalpha,7aalpha,8alpha,9aalpha))- Microhelenin E