You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[(13R,19R)-10-(4-aminobutyl)-19-[[2-[[5-[(8-amino-3,6,10,13,16,19-hexazabicyclo[6.6.6]icosan-1-yl)amino]-5-oxopentanoyl]amino]-3-phenylpropanoyl]amino]-7-(1-hydroxyethyl)-16-[(4-hydroxyphenyl)methyl]-13-(1H-indol-3-ylmethyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicosane-4-carbonyl]amino]-3-hydroxybutanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C68H102N18O14S2
assistant