We present a simple relativistic exact 2-component (X2C) Hamiltonian that models two-electron picture-change effects using Lehtola’s superposition of atomic potentials (SAP) [S. Lehtola, J. Chem. Theo
2001 geometries of (10-phenylacridin-9(10H)-ylidene)malononitrile in xyz format and reference TDDFT (ωB97XD/def2-SVP) values for 30 excitation energies and oscillator strengths at each geometry. Geome