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. 2022 Jul 28;48(5):906–918. doi: 10.1134/S1068162022050132

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© Pleiades Publishing, Ltd. 2022, ISSN 1068-1620, Russian Journal of Bioorganic Chemistry, 2022, Vol. 48, No. 5, pp. 906–918. © Pleiades Publishing, Ltd., 2022.ISSN 1068-1620, Russian Journal of Bioorganic Chemistry, 2022. © Pleiades Publishing, Ltd., 2022.

This article is made available via the PMC Open Access Subset for unrestricted research re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic.

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Fig. 6. — Structure of GA with the main position of synthesis modification.