[{"from": "human", "value": "What can you tell me about 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), produced by enzymatic depolymerization of unfractionated heparin from porcine intestinal mucosa. It is a heterogeneous mixture of with an average molecular weight between 5500 and 7500 daltons. Tinzaparin is composed of molecules with and without a special site for high affinity binding to antithrombin III (ATIII). This complex greatly accelerates the inhibition of factor Xa. It is an anticoagulant and considered an antithrombotic. Tinzaparin must be given either subcutaneously or parenterally. LMWHs are less effective at inactivating factor IIa due to their shorter length compared to unfractionated heparin."}]