You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 1-[3-amino-5-(4,4,4-trifluorobutylamino)thiophen-2-yl]-2-methylpropan-1-one by IUPAC nomenclature, provide its molecular formula.
user
C12H17F3N2OS
assistant