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. 2018 Nov 12;10:53. doi: 10.1186/s13321-018-0307-6

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© The Author(s) 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — An example macrolide scaffold with twelve structural motif (SM) units as building blocks. The sequence of SMs indicates their building order in the structure. The associated chemical names and structures of SMs can be found in Fig. 4