How to do a silent install for 4.1

Im trying to make a program that installs various programs automatically.

But for LibreOffice 4.1 all solutions don’t seem to work to install LibreOffice silently.

The standard msiexec /i lo4.1.msi /qn doesn’t work either.

My question is, what is the command to install libreoffice silently?

Greetings, Eater