166403-10-7 5,11-Methanofuro(3,4-d)(3)benzoxonin-1,12(3H,5H)-dione, 6,6a,7,8,9,10,10a,11-octahydro-6,6a-dihydroxy-3,11,13-trimethyl-, (3R-(3R*,5R*,6S*,6ar*,10ar*,11S*,13R*))- Dihydrotetrodecamycin