You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 2-[4-[5-bromo-3-(1,3-thiazol-2-yl)indol-1-yl]sulfonyl-2-methylphenoxy]acetate is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H19BrN2O5S2
assistant