You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[[4-amino-6-(dimethylamino)-1,3,5-triazin-2-yl]methyl]-3-ethyl-1H-indole-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C17H21N7O
assistant