[{"from": "human", "value": "Could you provide a description 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), obtained by controlled enzymatic depolymerization of heparin from porcine intestinal mucosa, with antithrombotic properties. Tinzaparin is a potent inhibitor of several activated coagulation factors, especially Factors Xa and IIa (thrombin); its primary activity is mediated through the plasma protease inhibitor antithrombin. In addition, this agent may inhibit angiogenesis through: 1) competitive binding of the heparin-binding sites on endothelial cells for the proangiogenic cytokines vascular endothelial growth factor (VEGF) and beta-fibroblast growth factor (beta-FGF) and 2) increasing the release of tissue factor pathway inhibitor (TFPI), a negative regulator of angiogenesis."}]