[{"from": "human", "value": "Provide a description of this molecule. [C][C@][Branch2][Branch1][Ring2][C@H1][C][C@@][C][C][C@@][Ring1][=Branch1][Branch2][Ring2][#Branch1][C@H1][C@@][Ring1][=Branch1][C][C][N][Branch2][Ring1][#Branch1][C@@H1][Ring1][#Branch2][C][C][=C][Ring1][Branch2][C][=Branch1][=Branch2][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][O][Ring1][#C][C][C][C][C][Ring1][Ring1][O][C][Branch1][=Branch2][C][Branch1][C][C][Branch1][C][C][C][O]"}, {"from": "gpt", "value": "The molecule is a morphinane alkaloid that is 7,8-dihydromorphine 6-O-methyl ether in which positions 6 and 14 are joined by a -CH2CH2- bridge, one of the hydrogens of the N-methyl group is substituted by cyclopropyl, and a hydrogen at position 7 is substituted by a 2-hydroxy-3,3-dimethylbutan-2-yl group. It is highly effective for the treatment of opioid use disorder and is also increasingly being used in the treatment of chronic pain. It has a role as an opioid analgesic, a mu-opioid receptor agonist, a delta-opioid receptor antagonist and a kappa-opioid receptor antagonist."}]