Ethyl 4-(5-bromo-1H-indol-3-yl)-2,6,6-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate - Gunduz, M G; Butcher, R J; Ozturk Yildirim, S (Acta Crystallogr E, 2012)
et al.