where F ab and F i j can be obtained by transforming the AO Fock matrix (constructed using the one-partical density matrix associated with the converged ALMO state) into the ALMO basis. The twoelectron integrals, including the contribution from the XC kernel, can be computed in the same way as in standard TDDFT/TDA calculations. Note that c HF denotes the percentage of exact exchange in the employed functional. For a pure functional, c HF = 0, while in the case of CIS, c HF = 1, and the last term in Eq. ( ) vanishes.