You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[2-[(6-chloropyridin-2-yl)amino]-2-oxoethyl] (1R,9S)-6-oxo-7,11-diazatricyclo[7.3.1.02,7]trideca-2,4-diene-11-carbodithioate is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H19ClN4O2S2
assistant