You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[6,6,7,7,8,8-hexafluoro-2-(2-methylprop-2-enoyloxymethyl)pentadecyl] 5-hydroxy-4-(hydroxymethyl)-2-methylidenepentanoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H42F6O6
assistant