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. 2024 Oct 29;29(21):5112. doi: 10.3390/molecules29215112

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© 2024 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Scheme 2 — The spirocondensation reaction pathway.