You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-(1,3-benzothiazol-2-yl)-N-(4-methylpiperidin-3-yl)furan-2-carboxamide;dihydrochloride by IUPAC nomenclature, provide its molecular formula.
user
C18H21Cl2N3O2S
assistant