You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 6-[[3-carbamoyl-5-[2-fluoro-4-(2-hydroxypropan-2-yl)phenyl]thiophen-2-yl]amino]-3-methylpyridine-2-carboxylic acid ?
user
C21H20FN3O4S
assistant