You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (1S,2R,3S,4R,5S,7S,8S,9R,10S)-3,4,5,6,6,7-hexachloropentacyclo[6.3.0.02,4.03,7.05,9]undecane-10-carbaldehyde by IUPAC nomenclature, provide its molecular formula.
user
C12H8Cl6O
assistant