SMILES: CC1=C(C(=O)O[C@H](C1)[C@@H](C)[C@]2(CC[C@@H]3[C@@]2(CC[C@H]4[C@H]3C[C@@H]5[C@]6([C@@]4(C(=O)C=C[C@@H]6O)C)O5)C)O)C
Description: The molecule is a withanolide that is 5,6:22,26-diepoxyergosta-2,24-diene-1,26-dione substituted by hydroxy groups at positions 4 and 17 (the 4beta,5beta,6beta,22R stereoisomer). Isolated from Tubocapsicum anomalum, it exhibits cytotoxic activity. It has a role as an antineoplastic agent. It is a delta-lactone, a 4-hydroxy steroid, an enone, an ergostanoid, a secondary alcohol, a tertiary alcohol, a 17alpha-hydroxy steroid, a withanolide and an epoxy steroid.