How can I gain access to Guilbault?

Please review the attached document for information on how to gain access to Guilbault. This document used Guilbault #0 as an example.

Building entrance code    421

MSM wiki - https://docs.google.com/spreadsheets/d/14afZ-Txm0ALJMIkjNLdE6Ho5rPCsZFck/edit#gid=1582990584