You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (3S,6S,9S,15R,18S,21S,24S,27S,30S,33S,39S,42S)-N,3-bis(2-amino-2-oxoethyl)-9-benzyl-21,24-dibutyl-18-(3-carbamimidamidopropyl)-30-(hydroxymethyl)-27,33-bis(1H-indol-3-ylmethyl)-6,7,22,25,37,42-hexamethyl-39-(2-methylpropyl)-2,5,8,11,17,20,23,26,29,32,35,38,41,44-tetradecaoxo-13-thia-1,4,7,10,16,19,22,25,28,31,34,37,40,43-tetradecazabicyclo[43.3.0]octatetracontane-15-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C86H124N22O18S
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