doitinpoland.com/wp-content/plugins/mailchimp-for-wp/vendor/composer/installed.php

<?php return array (
  'root' => 
  array (
    'pretty_version' => 'dev-master',
    'version' => 'dev-master',
    'aliases' => 
    array (
    ),
    'reference' => '64f936eb6a27ec15812ea8175b24bcfafec7907b',
    'name' => 'ibericode/mailchimp-for-wordpress',
  ),
  'versions' => 
  array (
    'ibericode/mailchimp-for-wordpress' => 
    array (
      'pretty_version' => 'dev-master',
      'version' => 'dev-master',
      'aliases' => 
      array (
      ),
      'reference' => '64f936eb6a27ec15812ea8175b24bcfafec7907b',
    ),
  ),
);