You can access this quest if you ask Sturges to help build the teleporter in The Molecular Level story quest. He will give you a Network Scanner holotape that he wants you to use in The Institute.
As you begin the final story quest, Institutionalized, look for any terminal in The Institute. Insert the holotape and then remove the data.
After you complete Institutionalized, return to Sanctuary Hills and give Sturges the data.
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