You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1S,2R,3S,5S,6S,16E,18E,20R,21S)-11-chloro-21-hydroxy-12,20-dimethoxy-2,5,6,9,15,16-hexamethyl-4,24-dioxa-9,22-diazatetracyclo[19.3.1.110,14.03,5]hexacosa-10,12,14(26),16,18-pentaene-8,23-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C30H41ClN2O7
assistant