You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[2-[4-[cyclohexyl(methyl)sulfamoyl]piperazin-1-yl]-2-oxoethyl]-N-methylthiophene-2-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H30N4O4S2
assistant