You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-[(E)-[(E)-1-(4-nitrophenyl)-3-phenylprop-2-enylidene]amino]-2-sulfanylidene-1H-pyrimidin-4-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H14N4O3S
assistant