You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (3R)-7-[4-[2-(4-chlorophenoxy)ethyl]piperazin-1-yl]sulfonyl-3-methyl-3,5-dihydro-2H-1,5-benzothiazepin-4-one ?
user
C22H26ClN3O4S2
assistant