149488-24-4 AIDS-033451 AIDS033451 Acetamide, N-[[3-[2-[[[(5-bromo-2-pyridinyl)amino]thioxomethyl]amino]ethyl]-2,4-difluorophenyl]methyl]- N-[2-(2,6-Difluoro-3-(acetamidomethyl)phenethyl)]-N'-[2-(5-bromopyridyl)]thiourea PETT deriv.