You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 4-[[8-[(3R)-3-aminopiperidin-1-yl]-7-[(2-cyanophenyl)methyl]-3-methyl-2,6-dioxopurin-1-yl]methyl]-2-fluorobenzoic acid is given. What is its corresponding molecular formula?
user
C27H26FN7O4
assistant