You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule (2R)-2-[3-[3-[2-[2-[3-[[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48R,50R)-3,42-bis(4-aminobutyl)-33,36-dibutyl-15-(carboxymethyl)-39-[[1-(carboxymethyl)indol-3-yl]methyl]-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-30-(2-methylpropyl)-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-6-(3H-pyrrol-5-ylmethyl)-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontane-27-carbonyl]amino]propoxy]ethoxy]ethoxy]propylamino]-3-oxopropyl]-4-oxohenicosanedioic acid into molecular formula.
user
C129H195N21O30S
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