You can find academic and industrial groups doing some relevant work, but there isn't a focus on building complex molecular systems. In that respect, Japan is first, Europe is second, and we're third.

Summary

This quote suggests that in the field of building complex molecular systems, Japan is leading, followed by Europe, and then there is another unnamed group in third place. It implies that although there may be academic and industrial groups working on related projects, their focus is not specifically on building these complex systems. Thus, Japan and Europe are recognized for their advancements and contributions in this area, while the third group, for unknown reasons, might not receive the same level of recognition.

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