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 4-cyano-N-[4-[[4-(4-cyano-2,6-dimethylphenoxy)thieno[3,2-d]pyrimidin-2-yl]amino]phenyl]benzenesulfonamide ?
user
C28H20N6O3S2
assistant