You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4-imidazol-1-ylphenyl)methyl (E)-3-[4-methoxy-3-(methylsulfamoyl)phenyl]prop-2-enoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C21H21N3O5S
assistant