Rc

(2R,3S,4S,5R,6S) -2- ((((2R,3R,4R,5S) -3,4-dihydroxy-5- (hydroxymethyl) tetrahydrofuran-2-yl) oxy) methyl) -6- (((S) -2- ((3S,5R,8R,9R,10R,12R,13R,14R,17S) -3- (((2R,3R,4S,5S,6R) -4,5-dihydroxy-6- (hydroxymethyl) -3- (((2S,3R,4S,5S,6R) -3,4,5-trihydroxy-6- (hydroxymethyl) tetrahydro-2H-pyran-2-yl) oxy) tetrahydro-2H-pyran-2-yl) oxy) -12-hydroxy-4,4,8,10,14-pentamethylhexadecahydro-1H-cyclopenta[a]phenanthren-17-yl) -6-methylhept-5-en-2-yl) oxy) tetrahydro-2H-pyran-3,4,5-triol