You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[1-[4-[[6-(1H-indazol-6-yl)imidazo[1,2-a]pyrazin-8-yl]amino]phenyl]piperidin-4-yl]ethanol into molecular formula.
user
C26H27N7O
assistant