You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S,4S)-1-[[4-hydroxy-1-(3-methoxyphenyl)piperidin-4-yl]methyl]-3-[(2,3,6-trimethylphenoxy)methyl]piperidine-3,4-diol is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H40N2O5
assistant