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 (7Z)-14-chloro-4,10-dimethyl-7-(4-methylpiperazin-1-yl)-3-oxa-5-azatricyclo[9.4.0.02,6]pentadeca-1(11),2(6),4,7,12,14-hexaene .
user
C20H24ClN3O
assistant