You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl N-[[4-[3-(2,4-dihydroxy-5-propan-2-ylphenyl)-5-sulfanylidene-1H-1,2,4-triazol-4-yl]phenyl]methyl]carbamate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H24N4O4S
assistant