[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@H1][Branch1][#C][C][C][C][=Branch1][C][=C][C][Branch1][C][C][Branch1][C][C][O][C@H1][C][C][C@@][Branch2][Branch1][O][C@@][Ring1][Branch1][Branch2][Branch1][Ring2][C][C][C][=C][Ring1][=Branch1][C][C][C@@H1][C@@][Ring1][=Branch1][Branch2][Ring2][Ring2][C][C][C@@H1][Branch1][=Branch2][C@@][Ring1][=Branch1][Branch1][C][C][C][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][C][C][C]"}, {"from": "gpt", "value": "The molecule is a triterpene glycoside that is lanost-8-ene substituted by hydroxy groups at positions 25 and 28, a methylidene group at position 24 and a beta-D-glucopyranosyloxy group at position 3. Isolated from the whole plant of Silybum marianum, it exhibits inhibitory activity against chymotrypsin. It has a role as an EC 3.4.21.1 (chymotrypsin) inhibitor and a plant metabolite. It is a triterpenoid saponin, a tetracyclic triterpenoid, a tertiary alcohol, a beta-D-glucoside and a primary alcohol."}]