You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): The molecule is a mu-opioid receptor agonist and a opioid analgesic, belonging to the anti tussive class of molecules.
user
O=C1CC2(CCCC2)CC(=O)N1CCCCN1CCN(c2ncccn2)CC1
assistant