51787-40-7

Spiro[cyclopropane-1,2'(1'H)-phenanthrene]-1',4'(3'H)-dione,10'-(acetyloxy)-4'b,5',6',7',8',8'a,9',10'-octahydro-3',9'-dihydroxy-2,4'b,7'-trimethyl-8'-methylene-,[2'S-[2'a(R*),3'a,4'bb,7'a,8'aa,9'b,10'a]]-