Is it possible to rename built in administrator account?

Nextcloud version (eg, 12.0.2):
Operating system and version (eg, Ubuntu 17.04): Ubuntu Server 18.04.1
Apache or nginx version (eg, Apache 2.4.25): 2.4.29
PHP version (eg, 7.1): 7.2

That’s actually all I wanted to ask. Is there any possibility to rename the built in administrator account in Nextcloud 14?