[{"from": "human", "value": "Could you give me a brief overview of this molecule? [2H][C][Branch2][Branch1][=N][C][C@@][Branch2][Branch1][#Branch1][C@H1][C][C@@H1][Branch2][Ring2][S][C@][Branch2][Ring2][O][C@H1][Branch2][Ring1][#Branch1][C@@H1][Ring1][=Branch1][C@@H1][Branch1][S][C][C@@H1][Ring1][#Branch2][C][Branch1][Branch1][C@@H1][Ring1][=C][O][Branch1][C][2H][2H][O][C][C][C@@H1][Ring1][#C][C@H1][Branch1][C][C][C][C][C][=Branch1][C][=O][O][C][O][C][2H]"}, {"from": "gpt", "value": "The molecule is a deuterated form of cholic acid with potential diagnostic applications. Upon intravenous administration, cholic-2,2,4,4-D4 acid levels may be used to measure first pass hepatic extraction of cholate, which is influenced primarily by portal blood flow and portal-systemic shunt."}]