You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2E)-2-cyano-N-(oxolan-2-ylmethyl)-2-[(5Z)-4-oxo-3-prop-2-enyl-5-(pyridin-2-ylmethylidene)-1,3-thiazolidin-2-ylidene]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H20N4O3S
assistant