[{"from": "human", "value": "Describe this molecule. [C][N][C][C][C][=C][C][=Branch2][=Branch1][#Branch2][=C][Branch2][=Branch1][Ring2][C][=C][Ring1][=Branch1][C@@H1][Ring1][#Branch2][C][C][=C][C][=Branch1][N][=C][Branch1][#Branch1][C][=C][Ring1][=Branch1][Ring1][#Branch2][O][C][O][C][=C][C][=Branch2][Ring2][Ring1][=C][Branch2][Ring1][=N][C][=C][Ring1][=Branch1][C][C@H1][C][=C][C][=Branch1][S][=C][Branch1][O][C][=C][Ring1][=Branch1][C][C][N][Ring1][#Branch2][C][O][C][O][C][O][C][O][C][O][C][O][C]"}, {"from": "gpt", "value": "The molecule is a natural aporphine benzylisoquinoline vinca alkaloid with antineoplastic activity. Thalicarpine binds to and inhibits p-glycoprotein, the multidrug resistance efflux pump. Thalicarpine also induces single-strand breaks in DNA and arrests cancer cells at the G2/M and G1 phase of the cell cycle. (NCI04)"}]