[{"from": "human", "value": "Describe this molecule. [C][N][C][=C][Branch1][O][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][=Branch2][C][=C][Branch1][#Branch2][C][=Branch1][C][=O][N][C][Ring1][=Branch1][=O][C][=C][N][Branch1][O][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][=Branch2][C][C][C][N][Branch1][Branch1][C][C][Ring1][=Branch1][C][C][=C][C][=C][C][=N][Ring1][=Branch1].[Cl]"}, {"from": "gpt", "value": "The molecule is the hydrochloride salt of enzastaurin, a synthetic macrocyclic bisindolemaleimide with potential antineoplastic activity.  Binding to the ATP-binding site, enzastaurin selectively inhibits protein kinase C beta, an enzyme involved in the induction of vascular endothelial growth factor (VEGF)-stimulated neo-angiogenesis. This agent may decrease tumor blood supply and so tumor burden."}]