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 (3E,5E)-N-(1-cyclopentylethenyl)-5-[3-(1H-pyrrolo[2,3-b]pyridin-2-yl)-1H-pyrazolo[4,3-b]pyridin-5-yl]hepta-1,3,5-trien-3-amine .
user
C27H28N6
assistant