You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(1S,2R,5S,6S,20R,21S)-11-chloro-21-hydroxy-12,20-dimethoxy-2,5,9,16-tetramethyl-8,23-dioxo-4,24-dioxa-9,22-diazatetracyclo[19.3.1.110,14.03,5]hexacosa-10,12,14(26),16,18-pentaen-6-yl] (2S)-2-[6-(2,5-dioxopyrrol-1-yl)hexanoyl-methylamino]propanoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C42H55ClN4O12
assistant