You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
butanamide;butan-1-amine;ethane;ethanethiol;ethanol;ethylbenzene;5-ethyl-1H-imidazole;4-ethylphenol;methane;2-methylbutane;2-methylpropane;4-propyl-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-2-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C53H106N6O4S2
assistant