You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
9-amino-2-[(3-chloro-4-methoxyphenyl)methyl]-5-(2-methoxypyridin-3-yl)pyrrolo[3,4-b]quinolin-1-ol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H21ClN4O3
assistant