You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-(1-benzothiophen-2-yl)-2-(2-chloro-5H-pyrrolo[2,3-b]pyrazin-7-yl)-N-[(2S,3S)-3-methyl-2-bicyclo[2.2.2]octanyl]pyrimidin-4-amine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H25ClN6S
assistant