You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name [(Z)-[(E)-2-chloro-3-(methylideneamino)-1-(1-phenylsulfanylindol-3-yl)prop-2-enylidene]amino]methanamine into its molecular formula.
user
C19H17ClN4S
assistant