[{"from": "human", "value": "Describe this molecule. [C][C][=Branch1][C][=O][O][C][Branch1][C][C][Branch1][C][C][/C][=C][/C][=Branch1][C][=O][C@@][Branch1][C][C][Branch2][=Branch1][N][C@H1][C@@H1][Branch2][=Branch1][=Branch1][C][C@@][Branch2][Branch1][S][C@@][Ring1][Branch1][Branch2][Branch1][=Branch2][C][C][=Branch1][C][=O][C@@][Branch2][Ring2][#C][C@H1][Ring1][#Branch1][C][C][=C][C@H1][Ring1][=Branch1][C][=C][Branch1][N][C][=Branch1][C][=O][C][Ring1][#Branch1][Branch1][C][C][C][O][C@H1][C@@H1][Branch1][P][C@H1][Branch1][=N][C@@H1][Branch1][=Branch2][C@H1][Branch1][Ring2][O][Ring1][=Branch1][C][O][O][O][O][C][C][C][O][O]"}, {"from": "gpt", "value": "The molecule is a triterpenoid saponin that is cucurbitacin E attached to a beta-D-glucopyranosyl residue at position 2 via a glycosidic linkage. Isolated from Machilus yaoshansis it exhibits antineoplastic activity. It has a role as a plant metabolite and an antineoplastic agent. It is a cucurbitacin, a beta-D-glucoside, a monosaccharide derivative, a triterpenoid saponin, an acetate ester and a tertiary alpha-hydroxy ketone. It is functionally related to a cucurbitacin E."}]