You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule 4-[3-butyl-2,6-di(propan-2-yl)phenyl]-12,15-diethyl-10-oxa-9,21-diazahexacyclo[9.8.2.02,7.08,21.012,15.016,20]henicosa-1(20),2(7),3,5,8,13,16,18-octaene into molecular formula.
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C38H44N2O
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