This phenyl ring is substituted at R3 by using a hydroxy group (OH-). An extra hydroxy group is found at the same site the cyclohexane ring is bonded to in the phenyl ring, R1. O-DMST contains a 3rd substitution on its cyclohexane ring at R2. Listed here the ring is https://landennbodl.pages10.com/how-o-dsmt-pellets-30mg-can-save-you-time-stress-and-money-65246788