- N,6-Dimethyl-9,10-didehydroergoline-8β-carboxamide
- (6aR,9R)-N,7-Dimethyl-4,6,6a,7,8,9-hexahydroindolo[4,3-fg]quinoline-9-carboxamide
- (8β)-N,6-Dimethyl-9,10-didehydroergoline-8-carboxamide
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