2-Azabicyclo[2.2.1]hept-5-en-3-one; Rac-Vince lactam; 3-Azabicyclo[2.2.1]hept-5-en-2-one; (±)-2-Azabicyclo[2.2.1]hept-5-en-3-one; (±)-Vince lactam;rac-Vince lactam;