401 S. Wacker drive is the property next to Enwave on the south side of Van Buren, just for clarity's sack in case anyone is wondering. The property next to 311 S. Wacker is currently under Murphy development ownership and under the 321 S. Wacker address. I can't officially find who owns the 401 S wacker piece of land, but I assume it's Hines, or maybe they're partnering with Enwave?
My question is, how can that small piece of land be large enough even for a million square foot + office tower? That would be even skinnier than Salesforce tower!