You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 3-[[(2R)-1-[(4S)-4-(4-chlorophenyl)-4-hydroxy-3,3-dimethylpiperidin-1-yl]-3-hydroxy-1-oxobutan-2-yl]carbamoyl]benzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H31ClN2O6
assistant