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 10-[[(2S)-oxolan-2-yl]methylsulfanyl]-11-phenyl-7-thia-9,11-diazatricyclo[6.4.0.02,6]dodeca-1(8),2(6),9-trien-12-one .
user
C20H20N2O2S2
assistant