You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(E)-2-amino-1-(2-amino-5-fluoro-4-methoxyphenyl)ethenyl]-6-[sulfinamoyl-(3,3,3-trifluoro-2-hydroxypropyl)amino]-2-azaspiro[3.3]heptane The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H25F4N5O3S
assistant