desvenlafaxine

noun

des·​ven·​la·​fax·​ine des-ˌven-lə-ˈfak-ˌsēn 

: a drug that functions as an SNRI and is administered orally chiefly in the form of its succinate C₁₆H₂₅NO₂·C₄H₆O₄·H₂O or fumarate C₁₆H₂₅NO₂·C₄H₄O₄ especially to treat depression

Note: Desvenlafaxine is the primary active metabolite of venlafaxine. The succinate of desvenlafaxine is marketed under the trademark Pristiq.