1-(5-Bromo-pyridin-2-yl)-3-{2-[4-(2-{2-[3-(5-hydroxymethyl-2,5-dihydro-furan-2-yl)-5-methyl-2,6-dioxo-3,6-dihydro-2H-pyrimidin-1-yl]-ethoxy}-ethyl)-piperazin-1-yl]-ethyl}-thiourea AIDS-163199 AIDS163199 Heterodimer [d4T]N^3-CH2-CH2-O-CH2-CH2-N-piperazinyl[trovirdine analogue]