(5S)-3,5-Bis(6-bromo-1H-indol-3-yl)-5,6-dihydro-2(1H)-pyrazinone 160098-93-1 2(1H)-Pyrazinone, 3,5-bis(6-bromo-1H-indol-3-yl)-5,6-dihydro-, (5S)- Hamacanthin B Hamacanthine B