You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[4-(3,5-dimethylpyrazol-1-yl)-3-fluorophenyl]-1-(2-hydroxypropyl)-1-propan-2-ylurea The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H25FN4O2
assistant