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 5-[4-(3-methoxypropylcarbamoyl)piperidine-1-carbonyl]-N-(4-methylphenyl)-1,3,4-thiadiazole-2-carboxamide .
user
C21H27N5O4S
assistant