[{"from": "human", "value": "Provide a description of this molecule. [C][C][NH1+1][Branch2][Ring1][#Branch2][C][C][C][C][Branch1][C][C][N][C][=C][C][=C][C][=Branch1][#Branch2][=C][C][Ring1][=Branch1][=NH1+1][C][=C][Ring1][#Branch2][Cl][C][C][O]"}, {"from": "gpt", "value": "The molecule is a quinolinium ion obtained by protonation of the quinoline nitrogen and tertiary amino group of the antimalarial drug hydroxychloroquine. It is the major species at pH 7.3. It is a quinolinium ion and a tertiary ammonium ion. It is a conjugate acid of a hydroxychloroquine."}]