. . . . . "Trichotomine" . "Trichotomine" . . "trichotomine" . . . . . . "(2E,5S)-2-[(5S)-5-carboxy-3-oxo-6,11-dihydro-5H-indolizino[8,7-b]indol-2-ylidene]-3-oxo-6,11-dihydro-5H-indolizino[8,7-b]indole-5-carboxylic acid" . . .