You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(4-fluorophenyl)-2-[(12-hydroxy-11-prop-2-enyl-7-thia-9,11-diazatricyclo[6.4.0.02,6]dodeca-1(8),2(6),9-trien-10-yl)sulfanyl]ethanone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H19FN2O2S2
assistant