You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
8-O-ethyl 6-O-methyl (2E)-7-amino-3-oxo-5-pyridin-3-yl-2-(pyridin-3-ylmethylidene)-5H-[1,3]thiazolo[3,2-a]pyridine-6,8-dicarboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H20N4O5S
assistant