fentanyl, fentanil, c22h28n2o molecule. it is opioid analgesic. molecular model

anaesthetic analgesia analgesic atom atomic ball c22h28n2o carbon care chemical chemistry chronic compound drug fentanil fentanyl fentanyle formula hydrogen illustration lollipop molecular molecule narcotic nitrogen opioid organic overdose pain palliative recreational render rendering schematic structural structure transdermal