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 (1S,3R,4Z,12R,13R)-15-[(2R)-1-hydroxy-4-methylpentan-2-yl]-18-(2,4,4-trimethylpentan-2-yl)-2,10-dioxa-15,18-diazatetracyclo[11.8.0.01,16.03,12]henicosa-4,20-diene-11,14,17-trione .
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C31H48N2O6
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