You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-(1-cyclopentylpiperidin-4-yl)-3-ethyl-2-[2-(oxan-2-ylmethylsulfamoyl)ethyl]guanidine by IUPAC nomenclature, provide its molecular formula.
user
C21H41N5O3S
assistant