You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl 2-[[5-(1-cyclopropyl-2,6-dioxo-3-propyl-7H-purin-8-yl)pyridine-2-carbonyl]amino]-3-phenylpropanoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H28N6O5
assistant