We resonantly drive electron dynamics to induce Rabilike oscillatory behavior in the three molecules, showing that as the system size increases we observe better agreement between the linear response Rabi frequency and the Rabi frequency calculated from real-time TDHF dynamics. For the case of resonant excitation from the S 0 state to a population consistent with the S 1 state, we find that the shifts in peaks of the absorption spectra and the degree of charge transfer obtained from RT-TDHF dynamics show better agreement with the expected LR result with increasing system size.