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. 2021 Dec 23;57(Suppl 1):S11–S26. doi: 10.1134/S0003683821100124

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© Pleiades Publishing, Inc. 2021, ISSN 0003-6838, Applied Biochemistry and Microbiology, 2021, Vol. 57, Suppl. 1, pp. S11–S26. © Pleiades Publishing, Inc., 2021.

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. 3. — Selected ¹H-¹H COSY and HMBC correlations for 9–12, 16 and 17.