You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[2-(4-tert-butylphenyl)sulfanyl-3-imidazol-1-ylpropyl]-2-methylpropan-2-amine;dihydrochloride by IUPAC nomenclature, provide its molecular formula.
user
C20H33Cl2N3S
assistant