SMILES: C[C@H]1CCC[C@]2([C@@]13[C@@H](O3)[C@H]4[C@@H](C2)OC(=O)C4=C)C
Description: The molecule is a sesquiterpene lactone that is the 5alpha-epoxy derivative of alantolactone. Isolated from the root extracts of Inula helenium, it exhibits antimycobacterial activity. It has a role as a metabolite and an antimycobacterial drug. It is a naphthofuran, a sesquiterpene lactone and an epoxide. It derives from an alantolactone.