Loony troll!
I generally say 800 – 1200 degrees plus for a fire. Depends on the fire load, fuel etc.
Floors structure was a concrete deck on a simple pin joint lattice beam onto an external frame . Probably not a full composite deck floor construction. More like part composite action.
Fire protection was sprayed vermiculite. Used widely in the 70/80s. Maybe 90mins protection. The stuff is quite easily damaged. That means all things being equal the structure will stay there for 90mins before losing STRUCTURAL INTEGRITY !
I remember a fire at a large food store in the 90s spreading across 5no 30min fire barriers (240min protection)in 20min. The building partially collasped but consider it was the weight of a light weight roof causing the collaspe and not concrete floors above as in the WTC.
Fire engineering in tall buildings is flawed. MOE (For the troll – Means of Escape) is problematic due to the height.
If you do fire engineer you point source the fire. Having numerous floors on fire is a little more than one would have allowed for.
Note also guidance is for MOE and not concerned with Building loss. Crown Fire Standard are slighty different as you and I pay for their replacement so the Standards also require a degree of propery protection.
But hey what do I know!