You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 2-[[(4R)-6-amino-4-(1H-indol-3-yl)-1,4-dihydro-1,3,5-triazin-2-yl]sulfanyl]-N-(3-chloro-5-methylphenyl)acetamide using the IUPAC nomenclature.
user
C20H19ClN6OS
assistant