Yes. On that map, it’s the “Wet Lab” building. It wasn’t that little, IMHO, but it’s basically gone now:
Yes, it would be great if they combined that with the parking lot and built something big.
FWIW, the permits on site (for the demolition) are for “85 Dekalb Ave”, so that could potentially be the correct address for this project going forward.
(Edit: Replaced wrong photo with correct one.)