求翻译：起疗效作用的物质基础应是广义的化学成分，包括无机物、小分子有机化合物（如挥发油、生物碱、黄酮和皂苷等）及生物大分子（如肽、蛋白、糖肽、多糖等）三大类。是什么意思？

Clinical effect of chemical composition of substances should be based on the generalized, including inorganic compounds, small molecule organic compounds (such as essential oils, such as alkaloids, flavones and saponins) and biological macromolecules (such as sugar peptide, protein, peptide, polysaccharides) three categories.