N-?[(11bS)?-?2,?6-?Bis[3,?5-?bis(trifluoromethyl)?phenyl]?-?4-?oxido-dinaphtho[2,?1-?d:1',?2'-?f]?[1,?3,?2]?dioxaphosphepin-?4-?yl]?-?1,?1,?1-?trifluoromethanesulfonamide, 97%, 50mg