You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(Z)-[5-[[4-(4-chloro-3-methoxyanilino)-5-fluoropyrimidin-2-yl]amino]cyclohexa-2,4-dien-1-ylidene]methanesulfonamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H17ClFN5O3S
assistant