You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name (10S,15S)-2-ethyl-2-methoxy-9,16,22,23-tetrazatetracyclo[16.3.1.13,7.010,15]tricosa-1(21),3,5,7(23),18(22),19-hexaene-8,17-dione into its molecular formula.
user
C22H26N4O3
assistant