You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(3S,6S,9S,15S,18S,21S,27R,30S,33S,36S,39S,42S,45S,48S,50R)-42-(2-aminoethyl)-6,30-bis(aminomethyl)-27-[(2-amino-2-oxoethyl)carbamoyl]-3-(3-amino-3-oxopropyl)-39-(1-benzothiophen-3-ylmethyl)-33,36-dibutyl-50-hydroxy-21-[(4-hydroxyphenyl)methyl]-45-(1H-indol-3-ylmethyl)-18,19,34,37-tetramethyl-2,5,8,14,17,20,23,29,32,35,38,41,44,47-tetradecaoxo-25-thia-1,4,7,13,16,19,22,28,31,34,37,40,43,46-tetradecazatricyclo[46.3.0.09,13]henpentacontan-15-yl]acetic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C85H119N21O21S2
assistant