This phenyl ring is substituted at R3 that has a hydroxy group (OH-). Yet another hydroxy group is discovered at exactly the same site the cyclohexane ring is bonded to in the phenyl ring, R1. O-DMST includes a 3rd substitution on its cyclohexane ring at R2. Here the ring is bonded to some dimethylamine group connected via a methylene bridge.O-Desm