You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (1S,16E,18E)-11-chloro-12-methoxy-9,16-dimethyl-4,24-dioxa-9,22-diazatetracyclo[19.3.1.110,14.03,5]hexacosa-10,12,14(26),16,18-pentaene-8,23-dione into molecular formula.
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C25H31ClN2O5
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