You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [6-[[(9Z,15Z)-1,7-dihydroxy-6,8,16,18-tetramethyl-5-[4-(3-methyl-3-propanoyloxiran-2-yl)pentan-2-yl]-3-oxo-4,21-dioxabicyclo[15.3.1]henicosa-9,15,18-trien-11-yl]oxy]-3-hydroxy-2-methyloxan-4-yl] carbamate by IUPAC nomenclature, provide its molecular formula.
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C41H65NO12
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