You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-amino-3-[4-[[6-amino-2-(butylamino)-8-oxo-7H-purin-9-yl]methyl]anilino]-3-oxopropyl]sulfanylicosan-2-yl hexadecanoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C55H96N8O4S
assistant