Letrozole affects Brain Function & memory in monkeys ......

Femara is Letrozole

Aromasin is Exemestane

Hopefully third time lucky!

From the Internet 

Exemestane, sold under the brand name Aromasin among others, is a medication used to treat breast cancer. It is a member of the class of antiestrogens known as aromatase inhibitors. Some breast cancers require estrogen to grow. Those cancers have estrogen receptors, and are called ER-positive