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I realize that you determined the absolute structure from the value of the Flack parameter, but my request was that you include a comment on how you were able to obtain a meaningful value for the Flack parameter in your case (in most instances where there are no heavy atoms to provide anomalous dispersion effects (and thus provide a means to determine an absolute structure by the Flack parameter) the Flack parameter cannot be determined with certainty). Is your low value for the Flack parameter just a coincidence or is there some feature of your data that enabled you to obtain a reliable value?

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