Tutorial input files can be obtained from:

https://github.com/CompBiochBiophLab/sbm-openmm/blob/master/tutorials/basic/01-AlphaCarbon

Instructions are in the following Jupyter Notebook:

https://github.com/CompBiochBiophLab/sbm-openmm/blob/master/tutorials/basic/01-AlphaCarbon/coarseGrainedSBM.ipynb

https://gist.github.com/Martin-Floor/e528d25908b5265c1520dcfd8a30fc1d