Definition: 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'.
Input: Question: Of the drugs reviewed, which of them does NOT act on the renin-angiotensin-aldosterone system ?: 
 Options:  <1> Atenolol. <2> Captopril. <3> Minoxidil <4> Eplerenone. <5> Aliskiren.
