efavirenz

noun

ef·​a·​vi·​renz ˌef-ə-ˈvī-ˌrenz 

: a reverse transcriptase inhibitor C₁₄H₉ClF₃NO₂ that is administered orally with other antiretroviral agents in the treatment of HIV infection

Note: Efavirenz is marketed under the trademark Sustiva. It is also marketed under the trademark Atripla when used in combination with emtricitabine and tenofovir disoproxil fumarate.