You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 6-methyl-5-[[(E)-1-[2-(3-nitrophenyl)-2-oxoethyl]sulfanylprop-1-enyl]amino]-2-sulfanylidene-1H-pyrimidin-4-one ?
user
C16H16N4O4S2
assistant