How to change the “from” email address in comment moderation

When comment moderation is turned on, a comment arrives from:

WordPress <[email protected]>

I would like to know where in the code this is set so that I might change the name to:

Custom Text <[email protected]>

I have been looking in:

MySQL db – browsing various tables

/wp-admin/includes/comment.php
/wp-admin/edit-comments.php

/wp-includes/class-phpmailer.php
/wp-includes/class-pop3.php
/wp-includes/class-smtp.php

/wp-mail.php
/wp-settings.php