(5β,12S,19β)-2,3-Didehydro-7α-ethyl-8,20,21-trinoraspidospermidine-3-carboxylic acid methyl ester;2,3-Didehydro-7α-ethyl-8,20,21-trinoraspidospermidine-3-carboxylic acid methyl ester;Ibophyllidine
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