The 18 lowest electronically excited states were converged for resonant response; 8 of B 2u , 8 of B 3u , and 2 of B 1u symmetries. Oscillator strengths were calculated for all 18 states, while the MCD terms were calculated for the lowest 15 states. With the damped approach, the high-energy spectrum was initially built between 0.15 and 0.30 a.u. with a distance of 0.01 a.u. between the grid points. To obtain a higher resolution of some spectral features, additional grid points were calculated in the ranges 0.145-0.18 a.u. and 0.19-0.23 a.u., such that the separation between points in these intervals was 0.005 a.u. The damped spectrum was drawn by cubic interpolation of the grid points. The absorption and MCD spectra obtained from interpolation of the coarse grid are depicted in Figure . All raw data are available in the SI.