You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-N-(2-aminoethyl)-3-N-[2-amino-2-[4-(1-pyridin-2-ylindol-5-yl)oxypyrimidin-2-yl]ethyl]benzene-1,3-diamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H28N8O
assistant