chlorogenin / chlorogenine [klɔˈrɒʤɪnɪn]
chlorogenin – n. – a steroidal sapogenin, C27H44O4, obtained from the soap plant Chloragalum pomeridianum
chlorogenine – n. – alstonine – an alkaloid, C21H20N2O4, found in the bark of a tree, Alstonia constricta and related species.