You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-[1-(3-chloropyridin-2-yl)pyrrolidin-3-yl]-2-methyl-3-[2-(4-sulfamoylphenyl)ethyl]guanidine .
user
C19H25ClN6O2S
assistant