You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-(1,3-benzodioxol-5-ylmethyl)piperazin-1-yl]-[(2R,4R)-4-(4-fluorophenyl)-2-(4-hydroxybutoxy)-3,4-dihydro-2H-pyran-6-yl]methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H33FN2O6
assistant