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What is the molecular formula of the compound with this IUPAC name [(1S,2R,3R,4S,5R,6S,8R,9R,13S,16S,17R,18S)-11-ethyl-8,9-dihydroxy-4,6,16,18-tetramethoxy-11-azahexacyclo[7.7.2.12,5.01,10.03,8.013,17]nonadecan-13-yl]methyl 2-[(3S)-3-methyl-2,5-dioxopyrrolidin-1-yl]benzoate;perchloric acid ?
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C37H51ClN2O14
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