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 (1E)-2-[4-[8-(2-chlorophenyl)-3-ethenyl-4,5-dihydrobenzo[g]indazol-1-yl]phenyl]buta-1,3-dien-1-ol;formamide ?
user
C30H26ClN3O2
assistant