You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
9,15,15-trimethyl-16-oxa-19-thia-2,4,5,7,8,10-hexazapentacyclo[10.7.0.02,6.07,11.013,18]nonadeca-1(12),5,8,10,13(18)-pentaene-3-thione is the IUPAC name of a molecule. Please give its molecular formula.
user
C14H14N6OS2
assistant