/usr/include/OpenMS/SIMULATION/ is in libopenms-dev 1.11.1-5.
This file is owned by root:root, with mode 0o755.
..
/usr/include/OpenMS/SIMULATION/DetectabilitySimulation.h
/usr/include/OpenMS/SIMULATION/DigestSimulation.h
/usr/include/OpenMS/SIMULATION/EGHFitter1D.h
/usr/include/OpenMS/SIMULATION/EGHModel.h
/usr/include/OpenMS/SIMULATION/IonizationSimulation.h
/usr/include/OpenMS/SIMULATION/LABELING/
/usr/include/OpenMS/SIMULATION/LABELING/BaseLabeler.h
/usr/include/OpenMS/SIMULATION/LABELING/BaseLabeler_impl.h
/usr/include/OpenMS/SIMULATION/LABELING/ICPLLabeler.h
/usr/include/OpenMS/SIMULATION/LABELING/ITRAQLabeler.h
/usr/include/OpenMS/SIMULATION/LABELING/LabelFreeLabeler.h
/usr/include/OpenMS/SIMULATION/LABELING/O18Labeler.h
/usr/include/OpenMS/SIMULATION/LABELING/SILACLabeler.h
/usr/include/OpenMS/SIMULATION/LABELING/sources.cmake
/usr/include/OpenMS/SIMULATION/MSSim.h
/usr/include/OpenMS/SIMULATION/RTSimulation.h
/usr/include/OpenMS/SIMULATION/RawMSSignalSimulation.h
/usr/include/OpenMS/SIMULATION/RawTandemMSSignalSimulation.h
/usr/include/OpenMS/SIMULATION/SimTypes.h
/usr/include/OpenMS/SIMULATION/sources.cmake