<prompt> Answer this question truthfullyWhat is the name of the viral enzyme that monophosphorylates AcyclovirFamciclovirValacyclovir, thereby activating it?  <response>: <reason> The name of the viral enzyme that monophosphorylates AcyclovirFamciclovirValacyclovir, thereby activating it, is Thymidine kinase. 