4H-6a,2,6-(Methanoxymetheno)-2H-naphth[1,2-d]oxocin-4-one,1,5,6,10,11,12,12a,12b-octahydro-1,6,10,11,12-pentahydroxy-9,12a,15-trimethyl-,[1R-(1a,2a,6b,6aa,10b,11b,12a,12aa,12bb,15R*)]-