You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-methyl-2-[[9-[(4-methylsulfonylphenyl)methyl]-6-(2-pyridin-2-ylethylamino)purin-2-yl]amino]-1,3-thiazole-5-carboxylic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H24N8O4S2
assistant