This phenyl ring is substituted at R3 having a hydroxy group (OH-). A further hydroxy group is discovered at a similar locale the cyclohexane ring is bonded to with the phenyl ring, R1. O-DMST includes a third substitution on its cyclohexane ring at R2. Here the ring is bonded to your dimethylamine group linked via a methylene bridge.O-Desmethyltra