You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 2-(22-acetyloxy-4,9,11,19,19-pentamethyl-5,10,24-trioxo-2,6,18,25-tetraoxaheptacyclo[12.10.1.11,8.03,7.014,23.016,20.011,26]hexacos-16(20)-en-17-yl)acetate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C33H42O11
assistant