2-Pyridinecarboxamide, N-[(1S)-5,5',6,6',7,7',8,8'-octahydro-2'-[[(11bS)-8,9,10,11,12,13,14,15- octahydrodinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin-4-yl]oxy][1,1'-bi naphthalen]-2-yl]-