You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-[5-cyclobutyl-2-(9H-pyrido[2,3-b]indol-4-yl)pyrido[3,4-d]pyrimidin-4-yl]pyrrolidin-3-ol .
user
C26H24N6O
assistant