/usr/include/sc/chemistry/qc/mbptr12/ is in libsc-dev 2.3.1-16build1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/sc/chemistry/qc/mbptr12/LIBS.h
/usr/include/sc/chemistry/qc/mbptr12/blas.h
/usr/include/sc/chemistry/qc/mbptr12/f77sym.h
/usr/include/sc/chemistry/qc/mbptr12/lapack.h
/usr/include/sc/chemistry/qc/mbptr12/linearr12.h
/usr/include/sc/chemistry/qc/mbptr12/linkage.h
/usr/include/sc/chemistry/qc/mbptr12/mbptr12.h
/usr/include/sc/chemistry/qc/mbptr12/moindexspace.h
/usr/include/sc/chemistry/qc/mbptr12/mp2r12_energy.h
/usr/include/sc/chemistry/qc/mbptr12/pairiter.h
/usr/include/sc/chemistry/qc/mbptr12/print_scmat_norms.h
/usr/include/sc/chemistry/qc/mbptr12/r12_amps.h
/usr/include/sc/chemistry/qc/mbptr12/r12ia.h
/usr/include/sc/chemistry/qc/mbptr12/r12ia_memgrp.h
/usr/include/sc/chemistry/qc/mbptr12/r12ia_mpiiofile.h
/usr/include/sc/chemistry/qc/mbptr12/r12ia_node0file.h
/usr/include/sc/chemistry/qc/mbptr12/r12int_eval.h
/usr/include/sc/chemistry/qc/mbptr12/svd.h
/usr/include/sc/chemistry/qc/mbptr12/transform_123inds.h
/usr/include/sc/chemistry/qc/mbptr12/transform_12inds.h
/usr/include/sc/chemistry/qc/mbptr12/transform_13inds.h
/usr/include/sc/chemistry/qc/mbptr12/transform_factory.h
/usr/include/sc/chemistry/qc/mbptr12/transform_ijxy.h
/usr/include/sc/chemistry/qc/mbptr12/transform_ikjy.h
/usr/include/sc/chemistry/qc/mbptr12/transform_ixjy.h
/usr/include/sc/chemistry/qc/mbptr12/transform_tbint.h
/usr/include/sc/chemistry/qc/mbptr12/twobodygrid.h
/usr/include/sc/chemistry/qc/mbptr12/vxb_eval_info.h