You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(14S)-18-(methoxymethoxy)-7,7,13,14-tetramethyl-20-(2-morpholin-4-ylethoxy)-6,8,15-trioxatricyclo[15.4.0.05,9]henicosa-1(17),2,12,18,20-pentaene-10,16-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H41NO9
assistant