You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (15R)-15-(benzenesulfonyl)tetracyclo[6.6.2.02,7.09,14]hexadeca-2,4,6,9,11,13-hexaene into its molecular formula.
user
C22H18O2S
assistant