You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 9-[4-(4,6-diphenylpyrimidin-2-yl)phenyl]-2-methyl-3-thia-1-azapentacyclo[9.6.1.02,6.07,18.012,17]octadeca-4,7,9,11(18),12,14,16-heptaene ?
user
C39H27N3S
assistant