The molecule is ergotaman bearing benzyl, hydroxy, and isopropyl groups at the 5', 12' and 2' positions, respectively, and oxo groups at positions 3', 6', and 18. It is a natural ergot alkaloid. It derives from a hydride of an ergotaman.
(6aR,9R)-N-[(1S,2S,4R,7S)-7-benzyl-2-hydroxy-5,8-dioxo-4-propan-2-yl-3-oxa-6,9-diazatricyclo[7.3.0.02,6]dodecan-4-yl]-7-methyl-6,6a,8,9-tetrahydro-4H-indolo[4,3-fg]quinoline-9-carboxamide