11H-Benzo(b)fluorene-5,10-dione, 2,3,4,11-tetrahydro-3-(acetyloxy)-11-diazo-2-methyl-1-(1-oxopropoxy)-2,4,9-trihydroxy-, (1R-(1-alpha,2-alpha,3-beta,4-alpha))- 156429-14-0 FL 120C' FL-120C'