You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 3-cyclooctyl-5-(3,5-dichlorophenyl)-3-prop-2-ynylsulfanyl-1,2,4-triazolidine by IUPAC nomenclature, provide its molecular formula.
user
C19H25Cl2N3S
assistant