You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-cyclohexyl-4-methyl-6-[4-[(E)-2-phenylethenyl]sulfonylpiperazin-1-yl]pyrimidin-2-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H31N5O2S
assistant