results show some degree of convergence, results from an even larger model space would have been more conclusive. Unfortunately, the largest computation model that we employed already pushes the limits of computational power at our disposal. Considering the convergence trends of Table \[CV\_effects\], we believe that the sign and the order of magnitude of the computed $C/\Omega$ constant would not change with increasing model space. We carried out additional convergence tests that support this conclusion. For example, trends in Table \[CV\_effects\] indicate that opening the $3p$ and $4p$ subshells substantially modify the result; so it is plausible that opening the subshell of the same angular momentum, $2p$ subshell, might modify the result further. To test this hypothesis, we opened the $2p$ subshell for a small model space and found this effect to be negligible. We take the result obtained with the largest model space as our final value, $C/\Omega = -6 \times 10^{-4} \, \mathrm{MHz/(b\times{\mu_N}})$. ]{}

[cdddddd]{} & & & & &\
no opened subshells & 0.578 & 0.630 & 0.649 & 0.652 & 0.652\
$~5s$ & 1.692 & 2.857 & 2.625 & 2.708 & 2.646\
$+5p$ & 2.453 & 3.633 & 3.360 & 3.439 & 3.366\
$+4d$ & 1.986 