You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(E)-benzylideneamino]-2-[1-[(2Z)-2-benzylidenehydrazinyl]-1-oxopropan-2-yl]sulfanylpropanamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H22N4O2S
assistant