If you're interested, researchers from the University of Bologna have been working on virtual acoustic models of that space in its current form [0] as well as past configurations [1] that you might be able to look into. It is truly huge reverberation! And thus, pretty difficult to simulate.

[0] https://doi.org/10.1080/19401493.2020.1728382 [1] http://pub.dega-akustik.de/ICA2019/data/articles/000682.pdf