You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named methyl (13S)-13-[(1S,9S,10S,11S,12S,19S)-10-(acetyloxymethyl)-12-ethyl-10,11-dihydroxy-5-methoxy-8-methyl-8,16-diazapentacyclo[10.6.1.01,9.02,7.016,19]nonadeca-2,4,6,13-tetraen-4-yl]-18-ethyl-1-oxido-17-oxa-11-aza-1-azoniapentacyclo[13.4.1.04,12.05,10.016,18]icosa-5,7,9-triene-13-carboxylate is given. What is its corresponding molecular formula?
user
C45H58N4O9
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