<?xml version="1.0" encoding="UTF-8"?>
<!--(C) EIOPA - XBRL Taxonomy-->
<?officialURI http://eiopa.europa.eu/eu/xbrl/s2c/dict/dom/ao/mem-lab-en.xml?>
<?taxonomy-version 2.6.0?>
<?taxonomy-date 2021-07-15?>
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:labelLink xlink:type="extended" xlink:role="http://www.xbrl.org/2003/role/link">
    <link:loc xlink:type="locator" xlink:href="mem.xsd#s2c_x0" xlink:label="loc_s2c_x0" />
    <link:label xlink:type="resource" xlink:label="label_s2c_x0" xml:lang="en" xlink:role="http://www.xbrl.org/2003/role/label">No</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_s2c_x0" xlink:to="label_s2c_x0" />
    <link:loc xlink:type="locator" xlink:href="mem.xsd#s2c_x1" xlink:label="loc_s2c_x1" />
    <link:label xlink:type="resource" xlink:label="label_s2c_x1" xml:lang="en" xlink:role="http://www.xbrl.org/2003/role/label">Yes</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_s2c_x1" xlink:to="label_s2c_x1" />
  </link:labelLink>
</link:linkbase>