RT-TDDFT simulation of charge migration following the selective excitation of (a) |c1〉, (b) |c3〉 and (c) broadband excitation of both. External fields Ez, time-dependent dipole moment μz, and populations of dominant core (MO2 and MO3) and valence (MO14, MO15, MO16, MO18) MOs. (Online version in colour.)