Vertical absorption spectra were computed using BSE@evGW as well as TD-DFT with different LC-BLYP parameters. Results are compared in Fig. where also experimental data are given. In terms of TD-DFT, the best alignment of the computed spectrum is obtained for the (α = 0, ω = 0.14) parameter set. In this instance, all three absorption peaks are close to the experimental values. In addition, their oscillator strengths also appear to be reasonably accurate. The agreement with the experiment is rather sensitive to the tuning parameters. For instance, an increase of the exact exchange at short distances (α) leads to a deterioration of the alignment, in the sense that the lower two peaks are shifted towards higher energies, and the latter is losing a significant amount of its oscillator strength.