The coordinating conjunction in the sentence is NOR.
There are only seven coordinating conjunctions. Remember the terms FAN BOYS in relation to coordinating conjunctions. F - for A - and N - nor B - but O - or Y - yet S - so
Coordinating conjunctions connect words, phrases, and clauses. Giving equal emphasis on two main clauses.
Here are the patterns for using coordinating conjunctions: 1) connecting two main clauses main clause + coordinating conjunction + main clause
2) connecting two items item + coordinating conjunction + item
3) connecting three or more items in a series item + item + coordinating conjunction + item