This chem image could be re-created using vector graphics as an SVG file. This has several advantages; see Commons:Media for cleanup for more information. If an SVG form of this image is available, please upload it and afterwards replace this template with {{vector version available|new image name}}.
It is recommended to name the SVG file “Mannich.svg”—then the template Vector version available (or Vva) does not need the new image name parameter.
In case this file would pass the threshold of originality, the copyright holder, Thiesi, allows the use of this file with the following conditions:
{{GFDL-user|Thiesi|de}}
Original upload log
The original description page was here. All following user names refer to de.wikipedia.