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 oxolan-2-ylmethyl 4-methyl-2-oxo-6-thia-1,8-diazatricyclo[7.3.0.03,7]dodeca-3(7),4,8-triene-5-carboxylate ?
user
C16H18N2O4S
assistant