[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][O][C][=C][Branch2][Ring1][#C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][/C][=C][\\C][=C][C][=Branch1][=C][=C][Branch1][=Branch2][C][=Branch1][Ring2][=C][Ring1][=Branch1][O][C][O][C][O][C][O]"}, {"from": "gpt", "value": "The molecule is an inhibitor of microtubule polymerization derived from the South African willow bush which causes mitotic arrest and selectively targets and reduces or destroys existing blood vessels, causing decreased tumor blood supply."}]