You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl (1R,19S)-8,16-diazapentacyclo[10.6.1.01,9.02,7.016,19]nonadeca-2,4,6,9,11-pentaene-10-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H20N2O2
assistant