C20H18O4 explained

The molecular formula C₂₀H₁₈O₄ may refer to:

• Glabrene, an isoflavonoid that is found in Glycyrrhiza glabra (licorice)
• Phaseolin (pterocarpan), a prenylated pterocarpan found in French bean (Phaseolus vulgaris) seeds and in the stems of Erythrina subumbrans