You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[[(2S,3R)-2-tert-butyloxan-3-yl]methyl]-4-(2,3-dimethylphenyl)piperazine-1-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H37N3O2
assistant