https://git-r3lab.uni.lu/covid/models/-/blob/master/Executable%20Modules/SBML_qual_build/sbml/Nsp14_stable.sbml

Modifications:
 - Changed sa106_NADP_simple_molecule_cytosol -> Nicotinamide_simple_molecule to non-essential.
 - Changed sa144_CD38_cytosol -> Nicotinamide_simple_molecule to non-essential.