You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 5-methoxy-3-[7-[3-[7-(3-methoxy-2,5,6-trioxocyclohex-3-en-1-yl)heptyl]oxiran-2-yl]heptyl]cyclohex-5-ene-1,2,4-trione ?
user
C30H40O9
assistant