[禁止「きんし」] => Don't do N4
Can, Should, Must
その[結果「けっか」] => Because of A (in the past), B N3
Reason, Result, Response
を[禁「きん」]じ[得「え」]ない => Can't help but do A, can't hold back from A (emotional response to something) N1
Will, Decision, Doing