The average spectral densities of the Chl-a and Chl-c molecules of the studied FCP complex are depicted in Fig. whereas the spectral densities for the individual pigments are provided in Fig. . Although, there is no experimental spectral density available for any FCP complex so far, the Chl-a molecules show spectral densities similar to those of plant LH complexes . As an example, we have compared in Fig. light-harvesting complex of plant photosystem, i.e., LHCII . Although the average spectral density of the Chl-a molecules does not perfectly match the experimental one, overall both results show a nice agreement taking into account the size of the complexes. In the case of the Chl-c pigments, the low-frequency regions are quite similar to those of the Chl-a molecules, the high-frequency regions differ significantly in terms of the number of peaks and their intensities. Calculated spectral densities using the present approach have been compared to their experimental counterparts for several light-harvesting complexes . The determination of the absorption spectra based on these spectral densities gave mixed results . Thus, we pursue two options in the following, i.e., we determine the absorption spectra with the calculated spectral density as well with the experimental one being aware that it has been determined for a slightly different complex. In both cases, the time-averaged Hamiltonian shown in Table has been employed. In the first set, the experimental spectral density has been considered and the comparison between simulated and experimental absorption spec-