You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-hydroxypropan-2-yl 4-[(2R)-2-methyl-4-[4-(trifluoromethyl)pyridin-2-yl]piperazin-1-yl]-4-oxobutanoate;2-methylpropane is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H34F3N3O4
assistant