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 6-(difluoromethyl)-3-[3-(3,5-dimethyl-4-nitropyrazol-1-yl)propanoylamino]-4-methylthieno[2,3-b]pyridine-2-carboxamide .
user
C18H18F2N6O4S
assistant