You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by N-[4-(2-heptylsulfonylethyl)phenyl]-4-pyridin-3-yl-4,5-dihydro-1,3-thiazol-2-amine;molecular hydrogen ?
user
C23H33N3O2S2
assistant