Here’s a few ideas then:
A) Don’t name it anything that is similar or could be tied back to WCU
B ) Don’t have anything that makes it stand out that could be identified with WCU (aka: belltower)
C) Don’t make the map 100% exact copy to that of the building, change things up and open some parts up. Make it different.
D) ???
E) PROFIT!!! (in theory)
Everyone that actually talked about the map and helped design it will know what it is, but to a newcomer and to anyone else it should just seem like another custom map.