You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[3-[1-[2-(2-methyl-1,3-thiazol-4-yl)ethenyl]indazole-6-carbonyl]phenyl]benzamide by IUPAC nomenclature, provide its molecular formula.
user
C27H20N4O2S
assistant