1H-Xantheno(4',3',2':4,5)(1,3)benzodioxino(7,6-g)isoquinoline-14,17(2H,9H)-dione, 3,4,8a,13-tetrahydro-3,15,16-trihydroxy-1,4-dimethoxy-12-methyl-13-((1-methyl-2-oxopropylidene)amino)-, (1S-(1alpha,3alpha,4beta,8aalpha))-