6H-Dipyrido[2,3-e:3',2'-b][1,4]diazepin-6-one, 8-[2-[(1,4-dihydro-2-oxo-2H-3,1-benzoxazin-5-yl)oxy]ethyl]-11-ethyl-5,11-dihydro-5-methyl- AIDS-220413 AIDS220413