You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(7S)-15-methoxy-14-[9-(4-methylpiperazin-1-yl)nonoxy]-3,9-diazatetracyclo[8.8.0.03,7.012,17]octadeca-1(10),8,11,13,15,17-hexaen-2-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C31H44N4O3
assistant