You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (1R,2R,5S,9Z,15S,16S,19R,20S)-7-benzyl-21-bromo-4-[(2R)-1-hydroxy-4-methylpentan-2-yl]-15-(methoxymethyl)-16-phenyl-17,23-dioxa-4,7,14-triazatetracyclo[18.2.1.01,5.02,19]tricosa-9,21-diene-3,6,13,18-tetrone .
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C39H46BrN3O8
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