SMILES: CC(=C)[C@H]1C[C@H]2[C@@H](C[C@]1(C)C=C)OC(=O)C2=C
Description: The molecule is a sesquiterpene lactone that is hexahydro-1-benzofuran-2(3H)-one substituted by a methyl group at position 6, methylene group at position 3, isopropenyl group at position 5 and a vinyl group at position 6. Isolated from Inula helenium and Rudbeckia laciniata, it exhibits antiproliferative activity. It has a role as a metabolite and an antineoplastic agent.