This image of a simple structural formula is ineligible for copyright and therefore in the public domain, because it consists entirely of information that is common property and contains no original authorship.
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(== Summary == {{Information |Description= {{w|Skeletal formula}} of {{w|4-maleylacetoacetic acid}} ('''melanic acid'''). Created using [http://www.acdlabs.com/download/chemsk.html ACD/ChemSketch 8.0] and [http://www.inkscape.org Inkscape]. |Source= Own wo)
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