You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(2-morpholin-4-ylpyridin-4-yl)-N-[(2R)-4-phenylbutan-2-yl]-1,3-thiazole-4-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H26N4O2S
assistant