You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[4-[[(2S)-5-(carbamoylamino)-2-[[2-[(4-ethoxy-4-methylpentanoyl)amino]acetyl]amino]pentanoyl]amino]phenyl]methyl N-[[2-[(1S,4R,8S,9S,11S,12S,13R)-11-hydroxy-9,13-dimethyl-16-oxo-6-propyl-5,7-dioxapentacyclo[10.8.0.02,9.04,8.013,18]icosa-14,17-dien-8-yl]-2-oxoethoxy]methyl]carbamate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C50H72N6O13
assistant