Muscarinic receptor agonists Pilocarpine毛果芸香碱(匹罗卡品) Hs c2 CH2 CH3 Pilocarpine毛果芸香碱Pilocarpine 毛果芸香碱（匹罗卡品） O N O H5C2 CH2 CH3 H3C H3C H3C N CH2CH2OCOCH3 + ? Pilocarpine 毛果芸香碱 Muscarinic receptor agonists