[{"from": "human", "value": "Describe this molecule. [C][C][Branch1][C][C][N][Branch1][N][C][C][C][C][O][C][C][=Branch1][C][=O][O][C][=C][N][=C][Branch1][#C][C][=Branch1][Ring2][=N][Ring1][=Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1]"}, {"from": "gpt", "value": "The molecule is a member of the class of pyrazines that is {4-[(propan-2-yl)(pyrazin-2-yl)amino]butoxy}acetic acid carrying two additional phenyl substituents at positions 5 and 6 on the pyrazine ring. The active metabolite of selexipag, an orphan drug used for the treatment of pulmonary arterial hypertension. It has a role as an orphan drug, a platelet aggregation inhibitor, a prostacyclin receptor agonist, a vasodilator agent and a drug metabolite. It is an aromatic amine, an ether, a member of pyrazines, a sulfonamide, a tertiary amino compound and a monocarboxylic acid."}]