You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (3R)-3-[[4-cyclopropyl-5-(1H-indol-3-yl)-1,2,4-triazol-3-yl]sulfanyl]azepan-2-one .
user
C19H21N5OS
assistant