To ensure the suitability of the single-reference formalism for each of these geometries, the T1 diagnostic was computed and verified to be ≤ 0.02 in all cases. We computed the energy of each strained conformer relative to the minimized ground-state conformer for each level of theory studied and compared the mean absolute error (MAE) and root-mean-squared error (RMSE) of these predictions for each method. Energies and structures were parsed using AaronTools/QChASM and structures were visualized with SEQCROW.