You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-iodo-3-methyl-2-methylsulfanyl-6-[(3,4,5-trihydroxyoxan-2-yl)amino]pyrimidin-4-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C11H16IN3O5S
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