> For the complete documentation index, see [llms.txt](https://chembl.gitbook.io/surechembl/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://chembl.gitbook.io/surechembl/chemical-search/structure-drawing.md).
# Structure drawing
SureChEMBL allows you to use EPAM's [Ketcher](https://lifescience.opensource.epam.com/ketcher/index.html) for chemical drawing.
Click on the "Structure Search" button to open Ketcher.
The molecule sketcher is accessed clicking on the "Structure Search" button
***Drawing the structure***
To draw a structure with Ketcher:
* Click on the desired Drawing tool icon.\
*The selected icon is highlighted*.
* Click in the drawing pane to place or use the item.
* Repeat for all elements of the structure.
***Connecting elements***
For the elements to properly combine into a coherent structure, you need to carefully select the location for the new element.
* Place the first piece of the structure in the drawing pane.
* Select the drawing tool for the next item to insert into the drawing.
* Point at the exact location where the new element connects to the existing drawing.\
*A visual indicator appears at the exact location on the existing structure where the new item will connect.*
* Click.
***Note*****:** *To select amongst a single, double, or triple bond, point to the middle of the bond to modify and click through the bond types until the desired one displays.*
***Deleting elements***
To remove the last element inserted, click on the **Undo** icon.
***Deleting the complete structure***
If you are still in the drawing application and realise you do not want to keep the structure you were drawing, click the **Clear** button in the upper right corner.
***More information***
See Ketcher [User's Guide](https://lifescience.opensource.epam.com/ketcher/index.html).
