Given the task definition and input, reply with output. In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.

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).
5