You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 2-[2-ethoxy-4-[(9S)-6-oxo-3,7-dithia-5-azatetracyclo[9.2.1.02,10.04,8]tetradec-4(8)-en-9-yl]phenoxy]-N-naphthalen-2-ylacetamide .
user
C31H30N2O4S2
assistant