represents the isotropic atomic dispersion coefficients calculated from imaginary-frequencydependent isotropic polarizability using the Casimir-Polder relationship. Given that the damping function's effect can be ignored at relatively large distances and our focus in this work is on long-range interactions, we did not include the damping function in the dispersion energy calculations in this work. The optimization of the damping function would be done together with the optimization of other short-range interactions, which is left to future work.