/usr/lib/ is in libsc-dev 2.3.1-18build1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/libSCmolecule.so
/usr/lib/libSCoint3.so
/usr/lib/libSCoptimize.so
/usr/lib/libSCoptions.so
/usr/lib/libSCpsi.so
/usr/lib/libSCref.so
/usr/lib/libSCrender.so
/usr/lib/libSCscf.so
/usr/lib/libSCscmat.so
/usr/lib/libSCsolvent.so
/usr/lib/libSCstate.so
/usr/lib/libSCsymmetry.so
/usr/lib/libSCwfn.so
/usr/lib/libmpqc.so
/usr/lib/libSCcints.so
/usr/lib/libSCclass.so
/usr/lib/libSCbasis.so
/usr/lib/libSCcontainer.so
/usr/lib/libSCdft.so
/usr/lib/libSCgroup.so
/usr/lib/libSCintv3.so
/usr/lib/libSCisosurf.so
/usr/lib/libSCkeyval.so
/usr/lib/libSCmbpt.so
/usr/lib/libSCmbptr12.so
/usr/lib/libSCmisc.so