/usr/share/terminfo/n/nsterm-acs-c-s is in ncurses-term 5.9+20140118-1ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/terminfo/n/nsterm-c-s-acs
/usr/share/terminfo/n/nsterm-c-s-acs