A 66-year-old female is brought to the emergency room who has been suffering from substernal chest pain. Her ECG showed ST segment elevation. Laboratory tests reveal elevated troponin. Echocardiogram showed an ejection fraction of 35%. She was treated with coronary angioplasty and transferred to the recovery room. Of the following, which medication should be initiated in this patient that has proved to reduce mortality in post-myocardial infarction patients?
