You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-(4-methoxyphenyl)sulfanyl-N-(4-methyl-1,3-benzothiazol-2-yl)-N-(pyridin-3-ylmethyl)acetamide by IUPAC nomenclature, provide its molecular formula.
user
C23H21N3O2S2
assistant