Raloxifene hydrochloride. Molecular model of the drug raloxifene hydrochloride (C28.H27.N.O4.S?H.Cl). This antiretroviral drug is sold under the brand name Evista is an oral selective estrogen receptor modulator (SERM). It is used for the treatment and prevention of osteoporosis in postmenopausal women. Atoms are represented as spheres and are colour-coded: carbon (grey), hydrogen (white), nitrogen (blue), oxygen (red), chlorine (green) and sulfur (yellow).