sofosbuvir

noun

so·​fos·​bu·​vir sō-ˈfäs-bu̇-ˌvir 

: an antiviral drug C₂₂H₂₉FN₃O₉P that is a nucleotide analog taken orally with other antiretroviral agents (such as ribavirin) to treat hepatitis C infection

Note: Sofosbuvir is marketed under the trademark Sovaldi and when used in combination with ledipasvir, under the trademark Harvoni.