What is the degree of unsaturation of cubane?

In the following reaction, compound Q is obtained from compound P via an ionic intermediate. What is the degree of unsaturation of Q?

Degree of unsaturation for

What is the degree of unsaturation in compound (x).

What is the degree of unsaturation in compound (x).

What is the degree of unsaturation in a compound with molecular formula C_(9)H_(6)N_(4) ?

Degree of unsaturation in is

Degree of unsaturation of diademan is

The degree of unsaturation of product is