The CBS and CV contributions refer to the differences between evaluations of these terms at the CCSD(T)-F12 and MP2-F12 levels. The diagonal Born-Oppenheimer correction ∆E DBOC and the scalar relativistic contribution to the energy ∆E rel are computed at the HF-SCF/aug-cc-pVDZ and CCSD(T)/aug-cc-pCVDZ level, after having checked their convergence with respect to contributions calculated with triple-zeta basis sets for a few stationary points. Finally, the corrections due to full treatment of triple (∆E fT ) and perturbative treatment of quadruple (∆E pQ ) excitations are computed, within the fc ap-proximation, as energy differences between CCSDT and CCSD(T) and between CCSDT(Q)