1-Butanaminium, 4-[(3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl)oxy]-N,N,N-trimethyl-4-oxo-2-[(1-oxoundecyl)oxy]-, (2R)- AIDS-191439 AIDS191439