You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(5S,6R,7R)-8-bromo-2-N-(2-chlorophenyl)-3-[(2R)-1-hydroxypropan-2-yl]-4-oxo-6-N-propyl-10-thia-3-azatricyclo[5.2.1.01,5]decane-2,6-dicarboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C22H27BrClN3O4S
assistant