Neochinulin A

Neoechinulin A

(6S)-3-[(Z)-[2-(1,1-Dimethyl-2-propenyl)-1H-indol-3-yl]methylene]-6-methyl-2,5-piperazinedione

(3S)-3α-Methyl-6-[(Z)-[2-(1,1-dimethyl-2-propenyl)-1H-indole-3-yl]methylene]hexahydropyrazine-2,5-dione