Complex sentence: Much like other members of the family Euphorbiaceae, "Jatropha" plants contain several toxic compounds, including lectin, saponin, carcinogenic phorbol, and a trypsin inhibitor.
Split into simpler sentences: Much like other members of the family Euphorbiaceae, members of the genus "Jatropha" contain several toxic compounds. They also contain saponin, carcinogenic phorbol, and a trypsin inhibitor.