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. 2020 Jun 1;25(11):2574. doi: 10.3390/molecules25112574

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© 2020 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 (http://creativecommons.org/licenses/by/4.0/).

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Comparison of the calculated conformations of 5a. (A) Free in solution. (B) Bound to the receptor. H white, O red, N blue, Tyr1 green, Pcp2 purple, Phe3 yellow, Pro4 grey.