The present disclosure relates to pharmaceutically acceptable salts, cocrystals, and crystalline forms thereof, of a compound which isN-((S)-l-(3-(4-chloro-3-(methylsulfonamido)-l-(2,2,2-trifluoroethyl)-lH-indazol-7-yI)-6-(3-methyl-3-(methylsulfonyl)but-l-yn-l-yl)pyridin-2-yl)-2-(3,5-difluorophenyl)ethyl)-2-((3bS,4aR)-5,5-difluoro-3-(trifluoromethyl)-3b,4,4a,5-tetrahydro-lH-cyclopropa[3,4]cyclopenta[l,2-c]pyrazol-l-yl)acetamide, which is useful in the treatment of aRetroviridaeviral infection including an infection caused by the HIV virus.本發明係關於化合物N-((S)-1-(3-(4-氯-3-(甲基磺醯胺基)-1-(2,2,2-三氟乙基)-1H-吲唑-7-基)-6-(3-甲基-3-(甲磺醯基)丁-1-炔-1-基)吡啶-2-基)-2-(3,5-二氟苯基)乙基)-2-((3bS,4aR)-5,5-二氟-3-(三氟甲基)-3b,4,4a,5-四氫-1H-環丙并[3,4]環戊并[1,2-c]吡唑-1-基)乙醯胺之醫藥上可接受之鹽、共晶體及其晶型,其可用於治療逆轉錄病毒科(Retroviridae)病毒感染(包括由HIV病毒引起之感染)。