Tutorial input files can be obtained from:

https://github.com/CompBiochBiophLab/sbm-openmm/blob/master/tutorials/basic/02-AllAtom

Instructions are in the following Jupyter Notebook:

https://github.com/CompBiochBiophLab/sbm-openmm/blob/master/tutorials/basic/02-AllAtom/allHeavyAtomSBM.ipynb

https://gist.github.com/Martin-Floor/14842052eb28f61fb9e8439bd8b732dd