You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-[[6-[[5-(4-fluorophenyl)-1,3,4-oxadiazol-2-yl]sulfanylmethyl]-2-methyl-1,2-dihydropyridin-3-yl]oxy]propan-1-ol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C18H20FN3O3S
assistant