[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][=Branch1][C][=O][N][C][C][Branch2][#Branch2][C][C][Branch2][Ring1][Ring1][C][Branch1][=Branch1][O][C][Ring1][=Branch1][O][C][O][S][=Branch1][C][=O][=Branch1][C][=O][O][O][C][C][Branch2][#Branch1][=N][C][Branch2][#Branch1][Branch2][C][Branch1][N][C][Branch1][Ring2][O][Ring1][=Branch1][C][=Branch1][C][=O][O][O][C][C][Branch2][Branch1][O][C][Branch2][Ring2][=C][C][Branch1][=Branch2][C][Branch1][Ring2][O][Ring1][=Branch1][C][O][O][C][C][Branch2][Ring1][Ring2][C][Branch1][S][C][Branch1][N][C][Branch1][Ring2][O][Ring1][=Branch1][C][=Branch1][C][=O][O][O][O][O][S][=Branch1][C][=O][=Branch1][C][=O][O][O][S][=Branch1][C][=O][=Branch1][C][=O][O][N][S][=Branch1][C][=O][=Branch1][C][=O][O][O][O][S][=Branch1][C][=O][=Branch1][C][=O][O][O]"}, {"from": "gpt", "value": "The molecule is a low molecular weight heparin (LMWH) which, when bound to antithrombin III (ATIII), accelerates the inactivation of factor II and factor Xa. Nadroparin halts the coagulation pathway by inhibiting the activation of thrombin (factor IIa) by factor Xa. The amplification of the fibrin clotting cascade is stopped once factors Xa and IIa are inactivated. It is derived from porcine sources and has a mean molecular size of 5000 daltons. Low molecular weight heparins are less effective at inactivating factor IIa due to their shorter length compared to unfractionated heparin."}]