Consider the following reactions \(\mathrm{NiS}+\mathrm{HNO}_3+\mathrm{HCl} \rightarrow \mathrm{A}+\mathrm{NO}+\mathrm{S}+\mathrm{H}_2 \mathrm{O}\) \(\begin{aligned} \mathrm{A}+\mathrm{NH}_4 \mathrm{OH}+\mathrm{H}_3 \mathrm{C}-\mathrm{C} & =\mathrm{N}-\mathrm{OH} \\ | ~\\ \mathrm{H}_3 \mathrm{C}-\mathrm{C} & =\mathrm{N}-\mathrm{OH}\end{aligned} \rightarrow \mathrm{B}+\mathrm{NH}_4 \mathrm{Cl}+\mathrm{H}_2 \mathrm{O}\) The number of protons that do not involve in hydrogen bonding in the product \(B\) is ______.

Hence, the correct answer is 12.