/usr/share/doc/libschroedinger-dev/TODO is in libschroedinger-dev 1.0.11-2ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libschroedinger-dev/../libschroedinger-1.0-0/TODO
/usr/share/doc/libschroedinger-dev/../libschroedinger-1.0-0/TODO