You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 19-(3-aminopyrrolidin-1-yl)-2-ethyl-3,7,16,18-tetramethyl-12,12-dioxo-12lambda6-thia-3,11,16,20,22,23-hexazatetracyclo[19.2.1.05,10.017,22]tetracosa-1(23),5(10),6,8,17,19,21(24)-heptaen-4-one .
user
C27H38N8O3S
assistant