You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 5-methyl-4-[(3-methyl-1,1-dioxo-1,4-thiazinan-4-yl)sulfonyl]thiophene-2-carboxylic acid by IUPAC nomenclature, provide its molecular formula.
user
C11H15NO6S3
assistant