You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[[4-(4-fluorophenyl)-1,3-thiazol-2-yl]methyl]-2-methoxy-6,7-dihydro-5H-cyclopenta[b]pyridine-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H18FN3O2S
assistant