I want to translate Classifieds Plugin.

Now, I am making a classifieds-ja.mo by poedit.
Where shall I put this mo-file ?

I try this.
mu-plugins/classifieds/languages/classifieds-ja.mo
mu-plugins/classifieds/classifieds-ja.mo
mu-plugins/classifieds-ja.mo

I can not translate !!

Please help.