You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 3-(2-fluoroethyl)spiro[8-oxa-3,11-diazatricyclo[7.4.0.02,6]trideca-1(9),2(6),4,10,12-pentaene-7,1'-cyclohexane]-4-carboxylate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C19H21FN2O3
assistant