This image shows some kind of formula that could be converted to TeX. Storing formulas as images makes it harder to change them. TeX also helps making sure that they all use the same font and size. A replacement has been proposed:
In your article, replace the image with:
<chem>H-\overset{\displaystyle H \atop | }{\underset{ | \atop \displaystyle H}{C} }-H</chem>
Benjah-bmm27, the copyright holder of this work, hereby publishes it under the following license:
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I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
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released into the public domain by the copyright holder<\/a>"}},"text\/plain":{"en":{"P275":"released into the public domain by the copyright holder"}}}}" class="wbmi-entityview-statementsGroup wbmi-entityview-statementsGroup-P275 oo-ui-layout oo-ui-panelLayout oo-ui-panelLayout-framed">