remifentanil molecule, molecular structures, opiate agonists, 3d model, structural chemical formula and atoms with color coding

remifentanil opiate agonists ultiva opioid analgesic drug molecule molecular structure chemical formula model c20h28n2o5 atom anaesthesia anaesthetic narcotic sedative carbon oxygen pain relief atomic hydrogen sedation chemistry nitrogen pharmaceutical skeletal anesthesia anesthetic flat remifentanyl icon medicine structural illustration organic science compound ester killer pharmacy treatment pharmacology structures atoms color coding coding