[{"from": "human", "value": "Describe this molecule. [C][C@H1][C][C][C][C@@][Branch2][Branch1][#Branch2][C@@H1][Branch1][Ring2][O][Ring1][Ring1][C][C@H1][Branch2][Ring1][S][N][C][=Branch1][C][=O][C][C@@H1][Branch2][Ring1][Branch1][C][Branch1][=C][C][=Branch1][C][=O][C@@H1][Branch1][=Branch1][C@H1][Ring2][Ring1][Ring1][O][C][Branch1][C][C][C][O][/C][=Branch1][N][=C][/C][=C][S][C][=Branch1][Ring2][=N][Ring1][Branch1][C][/C][C]"}, {"from": "gpt", "value": "The molecule is an orally bioavailable semisynthetic analogue of epothilone B with antineoplastic activity. Ixabepilone binds to tubulin and promotes tubulin polymerization and microtubule stabilization, thereby arresting cells in the G2-M phase of the cell cycle and inducing tumor cell apoptosis. This agent demonstrates antineoplastic activity against taxane-resistant cell lines."}]