You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(cyclohexen-1-yl)-6-(4-hydroxyphenyl)-2-phenyl-5-(pyrazin-2-ylamino)-4H-pyrazolo[1,5-a]pyridin-7-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C29H25N5O2
assistant