You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 5-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[4-[4-[3-[3-[3-[[(4S)-4-[[4-[(2-amino-4-oxo-3H-pteridin-6-yl)methylamino]benzoyl]amino]-4-carboxybutanoyl]amino]propoxy]propoxy]propoxy]butylamino]-4-oxobutoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethylcarbamothioylamino]-2-(3-hydroxy-6-oxoxanthen-9-yl)benzoic acid ?
user
C81H113N11O26S
assistant