[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C@@H1][Branch2][Ring2][C][C@H1][Branch2][Ring1][=N][C][=C][Ring1][#Branch1][C][=C][C][=C][C][=C][Branch1][#Branch1][C][Ring1][=Branch1][=C][Ring1][#Branch2][C][=C][C@@H1][Branch1][Branch1][C@H1][Ring1][Branch2][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a recombinant chimeric plasminogen activator, consisting of the kringle 2 domain from the A-chain of tissue plasminogen activator (t-PA) and the carboxy terminal region of pro-urokinase. [MeSH]"}]