N-[(11bS)-2,6-Bis[4-(1,1-dimethylethyl)phenyl]-8,9,10,11,12,13,14,15-octahydro-4-oxidodinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-yl]-1,1,1-trifluoromethanesulfonamide

N-[(11bS)-2,6-Bis[4-(1,1-dimethylethyl)phenyl]-8,9,10,11,12,13,14,15-octahydro-4-oxidodinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-yl]-1,1,1-trifluoromethanesulfonamide