You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-(5,6,7,8-tetrahydro-4H-cyclohepta[b]thiophene-2-carbonyl)piperidine-2-carbothioamide by IUPAC nomenclature, provide its molecular formula.
user
C16H22N2OS2
assistant