(S)-Cyclopropylethynyl-difluoro-trifluoromethyl-3,4-dihydro-1H-quinazolin-2-one and 1-((2R,4S,5S)-4-azido-5-hydroxymethyl-tetrahydro-furan-2-yl)-5-methyl-1H-pyrimidine-2,4-dione AIDS-170515 AIDS170515 DPC963 & AZT