<unk>  (brand name Vitravene) is an antiviral drug. It is used in the treatment of cytomegalovirus retinitis (CMV) in immunocompromised patients, including those with AIDS. It was licenced by the FDA for CMV in Aug 1998.
It is a synthetic 21 member oligonucleotide with phosphorothioate linkages (which are resistant to degradation by nucleases) and has the sequence:
5'-GCG TTT GCT CTT CTT CTT GCG-3'
Fomivirsen
Remdesivir
Letermovir
Adefovir
Daclatasvir
Tecovirimat
Entecavir
Saquinavir