The relevant structures are the all-trans and the 11-cis and 13-cis isomers, where the latter two cis geometries can be obtained by the torsions around 11-12 and 13-14 C=C bonds from the all-trans conformer, respectively as shown in Fig. . These isomers are formed via a non-radiative decay through two conical intersections (CI 11-12 and CI 13-14 ) that exist along the two respective Employing rPSB6 optimized geometries at the XMS-CASPT2 level of theory, two geodesic interpolations 117 connecting the 11-cis → CI 11-12 → all-trans as well as 13-cis → CI 13-14 → all-trans were performed. Single point energy calculations by XMS-CASPT2(12,12)/cc-pVDZ were performed on interpolated points with the Software Bagel, 128 and the results (triangle) are presented in Fig. (a) and (b), respectively, where the MRSF-TDDFT PESs as obtained by the three XC functionals (BH&BHLYP (solid line), DTCAM-AEE (dashed line), and DTCAM-VEE (dotted line)) on the same interpolated geometries are also shown. Regardless of XC functionals, the MRSF-TDDFT results show that CI 11-12 is lower than CI 13-14 , which is consistent with those of XMS-CASPT2 (the triangle). Furthermore, the exact locations of CIs in terms of torsional angles are also consistent with each other. Among the three functionals, DTCAM-AEE remarkably well reproduced the two-state (S 0 and S 1 ) energies of the two cis conformers and the two CIs.