You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-(12-piperazin-4-ium-1-yl-10-thia-8,15-diaza-13-azoniatetracyclo[7.7.0.02,6.011,16]hexadeca-1(9),2(6),7,11,13,15-hexaen-7-yl)morpholine is the IUPAC name of a molecule. Please give its molecular formula.
user
C20H26N6OS+2
assistant