SMILES: C[C@H]1[C@@H](C[C@@H]([C@]2([C@H]1C3=CC[C@@H]4[C@]5(CCC(=O)C([C@@H]5CC[C@]4([C@@]3(CC2)C)C)(C)C)C)C)O)C(=O)OC
Description: The molecule is a pentacyclic triterpenoid with formula C31H48O4, originally isolated from the roots of Tripterygium regelii. It has a role as a plant metabolite. It is a pentacyclic triterpenoid, a cyclic ketone, a secondary alcohol and a methyl ester. It derives from a hydride of an ursane.