You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[[5-(cyclopentylmethyl)-1H-1,2,4-triazol-3-yl]sulfanyl]-N-[1-(4-sulfamoylphenyl)ethyl]acetamide by IUPAC nomenclature, provide its molecular formula.
user
C18H25N5O3S2
assistant