You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-[5-chloro-2-[[4-(1,3-oxazol-5-yl)phenyl]sulfonylamino]phenyl]-N'-ethenyl-N-methylidene-2-oxoethanimidamide .
user
C20H15ClN4O4S
assistant