5-[(11aR)-10,11,12,13-Tetrahydrodiindeno[7,1-de:1',7'-fg][1,3,2]dioxaphosphocin-5-yl]-5H-dibenz[b,f]azepine

5-[(11aR)-10,11,12,13-Tetrahydrodiindeno[7,1-de:1',7'-fg][1,3,2]dioxaphosphocin-5-yl]-5H-dibenz[b,f]azepine