求翻译：Systems biology, which blends theory, computational modeling and high-throughput experimentation, has already led to advances in the understanding of cell signaling, developmental biology, cell physiology and metabolic networks. However, despite these advances in biological insight, what is currently lacking from these approaches is any holistic understanding of how small molecules affect biological systems. The introduction of cheminformatics tools that can be seamlessly integrated with currently available bioinformatic and cheminformatic databases and biological network simulations and software will be required to move toward a systematic understanding of the way small molecules affect biological systems是什么意思？

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