You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N'-(9-hydroxy-5-methyl-3,10-dioxo-1,7,8,9,11,11a-hexahydro-[1,3]oxazolo[3,4-c][1,3]diazonin-11-yl)ethanimidamide into its molecular formula.
user
C12H18N4O4
assistant