Contains non-Free header file: CDXConstants.h
Contains non-Free code: goldman_rotate.cpp

Portions copyright by Christoph Steinbeck, the JChemPaint project and
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-- XDrawChem copyright begins here --

XDrawChem
Copyright (C) 2004-2005  Bryan Herger <bherger@users.sourceforge.net>
Copyright (C) 2020  Yaman Qalieh <ybq987@gmail.com>

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