(11bS)-2,6-bis[3,5-bis(trifluoromethyl)phenyl]-N,N-bis[(1R)-1-phenylethyl]-dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-amine

(11bS)-2,6-bis[3,5-bis(trifluoromethyl)phenyl]-N,N-bis[(1R)-1-phenylethyl]-dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-amine