SMILES: C[C@H]1C[C@@H](OC(=O)[C@H]1C)[C@@H](C)[C@H]2CC[C@@H]3[C@@]2(CC[C@H]4[C@H]3CCC5=CC(=O)C=C[C@]45C)COC(=O)C
Description: The molecule is a withanolide that is 22,26-epoxyergosta-1,4-diene substituted by an acetyloxy group at position 18 and oxo groups at positions 3 and 26. Isolated from a Formosan soft coral Paraminabea acronocephala, it has been found to inhibit the accumulation of the pro-inflammatory iNOS protein. It has a role as a coral metabolite and an EC 1.14.13.39 (nitric oxide synthase) inhibitor. It is a delta-lactone, an acetate ester, an ergostanoid, a withanolide, a steroid ester and a 3-oxo-Delta(1),Delta(4)-steroid.