You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R,5S,14S,18E)-2-methyl-11-methylidene-1'-methylsulfonyl-14-propan-2-ylspiro[3-oxa-9,12,15,26,29-pentazatetracyclo[18.5.3.15,9.023,27]nonacosa-1(26),18,20(28),21,23(27),24-hexaene-17,4'-piperidine]-4,10,13,16-tetrone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C33H42N6O7S
assistant