Task: Question Answering
Input (English): Question: Which of the following drugs is NOT used for the treatment of psychotic symptoms of schizophrenia: 
 Options:  <1> Olanzapine (Zyprexa). <2> Risperidone (Risperdal). <3> Aripiprazole (Abilify) <4> Clozapine (Leponex). <5> Venlafaxine (Dobupal, Vandral).
Output (English): 5