You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as N-[(2R)-3-methyl-1-oxo-1-[2-[(4-propan-2-ylphenyl)carbamothioyl]hydrazinyl]butan-2-yl]thiophene-2-carboxamide using the IUPAC nomenclature.
user
C20H26N4O2S2
assistant