[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@H1][C@@H1][Branch2][#Branch2][=N][C@H1][Branch2][#Branch2][Branch2][C@H1][Branch2][#Branch2][Ring1][C@@H1][Branch1][Ring2][O][Ring1][=Branch1][O][C@@H1][C@H1][Branch2][=Branch2][=Branch1][C@@H1][Branch2][Branch2][P][C@H1][Branch2][Branch2][O][O][C@H1][Ring1][=Branch1][O][C@H1][C][O][C@H1][Branch2][Ring1][=C][C@@H1][Branch1][Branch1][C@H1][Ring1][=Branch1][O][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][O][C@H1][C][C][C@][Branch2][Branch1][=Branch2][C@H1][Branch1][Branch2][C][Ring1][=Branch1][Branch1][C][C][C][C][C][C@@][Branch2][Ring2][Branch2][C@@H1][Ring1][=Branch2][C][C][=C][C@][Ring1][=Branch1][Branch2][Ring1][O][C][C@H1][Branch2][Ring1][Branch1][C@@][Branch1][S][C@H1][Ring1][=Branch1][C][C][Branch1][Branch1][C][C][Ring1][=Branch1][Branch1][C][C][C][C][O][O][C][C][C][C][O][O][O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a triterpenoid saponin that is composed of primulagenin A having a alpha-L-rhamnopyranosyl-(1->2)-beta-D-glucopyranosyl-(1->4)-[beta-D-glucopyranosyl-(1->2)]-alpha-L-arabinopyranosyl moiety attached to position 3 by a glycosidic linkage. It is isolated from the whole plants of Ardisia pusilla and exhibits cytotoxic activity against human gliboblastoma U251MG cells. It has a role as an antineoplastic agent and a plant metabolite. It is a tetrasaccharide derivative, a pentacyclic triterpenoid and a triterpenoid saponin. It is functionally related to a primulagenin A."}]