You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 10-amino-3,3-dioxo-3lambda6-thia-2,9,11,20-tetrazatetracyclo[11.7.1.14,8.014,19]docosa-1(20),4,6,8(22),9,13(21),14,16,18-nonaen-12-one;methane .
user
C18H17N5O3S
assistant