/usr/share/doc/mpqc/changelog.Debian.gz is in mpqc 2.3.1-16build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/mpqc/../libsc7/changelog.Debian.gz
/usr/share/doc/mpqc/../libsc7/changelog.Debian.gz