/usr/include/sc/chemistry/qc/intv3/ is in libsc-dev 2.3.1-16build1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/sc/chemistry/qc/intv3/LIBS.h
/usr/include/sc/chemistry/qc/intv3/array.h
/usr/include/sc/chemistry/qc/intv3/cartitv3.h
/usr/include/sc/chemistry/qc/intv3/fjt.h
/usr/include/sc/chemistry/qc/intv3/flags.h
/usr/include/sc/chemistry/qc/intv3/int1e.h
/usr/include/sc/chemistry/qc/intv3/int2e.h
/usr/include/sc/chemistry/qc/intv3/intv3.h
/usr/include/sc/chemistry/qc/intv3/macros.h
/usr/include/sc/chemistry/qc/intv3/obintv3.h
/usr/include/sc/chemistry/qc/intv3/storage.h
/usr/include/sc/chemistry/qc/intv3/tbintv3.h
/usr/include/sc/chemistry/qc/intv3/tformv3.h
/usr/include/sc/chemistry/qc/intv3/types.h
/usr/include/sc/chemistry/qc/intv3/utils.h