79236-42-3 Azuleno(6,5-b)furan-2(3H)-one, 3a,4,4a,5,6,7,9,9a-octahydro-5,6,9-trihydroxy-3,5,8-trimethyl-, (3S,3aR,4aR,5S,6R,9R,9aS)-