That's a site we nicknamed the Nightmare Lab. I'm assuming you know what the site was when it was open and you're just keeping that secret. Security at that site was vigilant, but every time I visited there'd always be a way in, usually caused by vandals.
Right at the 2:40 mark in your video, you can see one
wall covered with wallpaper tatters. That used to be an enclosed room with all sorts of
medical specimens left behind. By the time we first visited around 2013, it was the one room like that in the whole building, while almost everything else was removed. I don't think I'd ever seen that wheelchair, or the auditorium.
The site was ruined sometime around 2018 when the specimens disappeared, and now there's a public park in the area. I haven't returned in years.
Was this video recorded recently? I'd also be curious about the status of some of the other buildings there, especially the one behind (north?) this building -- we never could get in that one.
EDIT: at least I thought it was. Looking closer at the footage, I'm not so sure anymore.