[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is an orally available pyridinone derivative that inhibits collagen formation and is used to treat idiopathic pulmonary fibrosis. Elevations in serum enzyme levels during pirfenidone therapy are not uncommon, but it has yet to be implicated in cases of clinically apparent liver injury with jaundice."}, {"from": "gpt", "value": "[C][C][=C][N][Branch1][=Branch2][C][=Branch1][C][=O][C][=C][Ring1][#Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1]"}]