Eldecalcitol Impurity 46

(4aS,6aR,7R,9aR) -11- ((3R,4R,5R) -3,5-dihydroxy-4- (3-hydroxypropoxy) -2-methylcyclohex-1-en-1-yl) -7- ((R) -6-hydroxy-6-methylheptan-2-yl) -6a-methyl-2-phenyl-4a,6,6a,7,8,9,9a,11-octahydro-1H,5H-cyclopenta[f][1,2,4]triazolo[1,2-a]cinnoline-1,3 (2H) -dione