(11aR)-10,11,12,13-Tetrahydro-N,N-bis(1-methylethyl)diindeno[7,1-de:1',7'-fg][1,3,2]dioxaphosphocin-5-amine

(11aR)-10,11,12,13-Tetrahydro-N,N-bis(1-methylethyl)diindeno[7,1-de:1',7'-fg][1,3,2]dioxaphosphocin-5-amine