You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2-[[6-[[(4-tert-butylphenyl)methyl-methylsulfonylamino]methyl]pyridin-2-yl]amino]acetic acid;hydrochloride into its molecular formula.
user
C20H28ClN3O4S
assistant