41653-82-1 Azuleno(4,5-b)furan-2(3H)-one, 3a,4,6a,7,9a,9b-hexahydro-4,6a-dihydroxy-6,9-dimethyl-3-methylene-, (3aR-(3aalpha,4alpha,6aalpha,9aalpha,9bbeta))- Rupicolin A