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 N-ethyl-N'-[(3-fluoro-4-methoxyphenyl)methyl]-4-(2-propan-2-yloxyethylsulfonyl)piperazine-1-carboximidamide ?
user
C20H33FN4O4S
assistant