You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-[21-[[5-amino-2-[[7-amino-3-hydroxy-4-[[2-[(3-hydroxy-6-methylheptanoyl)amino]acetyl]amino]-7-oxoheptanoyl]amino]-3,4-dimethyl-5-oxopentanoyl]amino]-15-(4-aminobutyl)-6-(2-amino-1-ethoxy-2-oxoethyl)-9-(3-amino-3-oxopropyl)-18-(1-hydroxyethyl)-10,22-dimethyl-12-(2-methylpropyl)-2,8,11,14,17,20,24-heptaoxo-23-oxa-1,4,7,10,13,16,19-heptazabicyclo[23.4.0]nonacosan-3-yl]acetic acid .
user
C66H114N16O22
assistant