You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 3-amino-N-methyl-6-[3-methyl-1-(pyrazin-2-ylmethyl)piperidin-3-yl]thieno[2,3-b]pyridine-2-carboxamide .
user
C20H24N6OS
assistant