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 16-ethenyl-4-hydroxy-5,13-dimethoxy-15-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-14-oxa-10-azatetracyclo[8.8.0.02,7.012,17]octadeca-1(18),2,4,6,12(17)-pentaen-11-one .
user
C26H31NO11
assistant