You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name (E)-2-cyano-N-[(3R,4R,5S,6R)-6-ethyl-2,4,5-trihydroxyoxan-3-yl]-3-[5-[6-(4-methylpiperazin-1-yl)naphthalen-2-yl]thiophen-2-yl]but-2-enamide ?
user
C31H36N4O5S
assistant