You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[3-[(3S)-1-[(2,3-dimethoxyphenyl)methyl]pyrrolidin-3-yl]pyrazolo[3,4-b]pyrazin-1-yl]ethanamine The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H26N6O2
assistant