You can use dism to convert the install.esd from the Media Creation Tool to an install.wim.

dism /export-image /sourceimagefile:c:\path\to\install.esd /destinationimagefile:c:\path\to\install.wim /compress:max /checkintegrity

The install.esd file could contain a few different versions of windows, so you may need the source index for this to work. To find the appropriate index, run:

dism /get-wiminfo /wimfile:c:\path\to\install.esd

Then add the /sourceindex:# for the version of window you need:

dism /export-image /sourceimagefile:c:\path\to\install.esd /sourceindex:6 /destinationimagefile:c:\path\to\install.wim /compress:max /checkintegrity