You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 6-acetyl-5,8-dihydroxy-7-methyl-4-[(1R,2R,5R,9R,11S,15S,20R,23S,24R,26S,27R,28R,29S,33R)-23,27,28-trihydroxy-15-(3-hydroxypropyl)spiro[13,25,32-trioxa-3,4-diazanonacyclo[14.14.1.12,9.12,11.120,29.05,9.019,31.024,29.015,33]tetratriaconta-16,19(31)-diene-7,1'-cyclopentane]-26-yl]oxynaphthalene-2-carboxylic acid into molecular formula.
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C50H62N2O13
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