To test the performance of our model on high accuracy force data specifically, we compare DFTB/ChIMES with the CCSD(T)/cc-pVTZ data for 2000 configurations of ethanol in the GDML data set (54,000 data points total). Again our DFTB/ChIMES gives an improvement over standard DFTB as MAE and RMSE are both reduced by ∼40%. A direct force comparison to DFTB-NN rep or the ISO34 reference was unavailable.