/usr/share/avogadro/fragments/carbohydrates/ is in avogadro-data 1.2.0-1+deb9u1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/avogadro/fragments/carbohydrates/d-allose.cml
/usr/share/avogadro/fragments/carbohydrates/d-altrose.cml
/usr/share/avogadro/fragments/carbohydrates/d-arabinose.cml
/usr/share/avogadro/fragments/carbohydrates/d-erythrose.cml
/usr/share/avogadro/fragments/carbohydrates/d-erythrulose.cml
/usr/share/avogadro/fragments/carbohydrates/d-fructose.cml
/usr/share/avogadro/fragments/carbohydrates/d-galactose.cml
/usr/share/avogadro/fragments/carbohydrates/d-glucose.cml
/usr/share/avogadro/fragments/carbohydrates/d-glyceraldehyde.cml
/usr/share/avogadro/fragments/carbohydrates/d-gulose.cml
/usr/share/avogadro/fragments/carbohydrates/d-idose.cml
/usr/share/avogadro/fragments/carbohydrates/d-lyxose.cml
/usr/share/avogadro/fragments/carbohydrates/d-mannose.cml
/usr/share/avogadro/fragments/carbohydrates/d-psicose.cml
/usr/share/avogadro/fragments/carbohydrates/d-ribose.cml
/usr/share/avogadro/fragments/carbohydrates/d-ribulose.cml
/usr/share/avogadro/fragments/carbohydrates/d-sorbose.cml
/usr/share/avogadro/fragments/carbohydrates/d-tagatose.cml
/usr/share/avogadro/fragments/carbohydrates/d-talose.cml
/usr/share/avogadro/fragments/carbohydrates/d-threose.cml
/usr/share/avogadro/fragments/carbohydrates/d-xylose.cml
/usr/share/avogadro/fragments/carbohydrates/d-xylulose.cml
/usr/share/avogadro/fragments/carbohydrates/dihydroxyacetone.cml