You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (4S,5S)-2-(pyridine-3-carbonyl)-4-pyridin-3-yl-9-(pyridin-4-ylmethyl)-6-oxa-2,9-diazaspiro[4.5]decan-10-one by IUPAC nomenclature, provide its molecular formula.
user
C24H23N5O3
assistant