What is the IUPAC name of the given compound?
Nitrile group have more priority hence while numbering it is given the lowest locants
The other one is called methylidene group or methylenegroup that is substituted to the cyclohexane ring.
It is given consequtive locants after nitrile group.
The preferred IUPAC name is 1,3,5-tricyano-2,4,6-trimethylenecyclohexane.
Nitriles take precedence over alkenes in naming, so the cyano groups get the lowest numbers.
The methylidene groups (formerly called methylene) are not complex groups, so they take ordinary multiplying prefixes (e.g., tri-).
Thus, the name is 1,3,5-tricyano-2,4,6-trimethylenecyclohexane.