Best Answer

Sulfur only has 6 valence electrons, so unless something very strange is going on, you can't get anything beyond S+6. The structure of this compound (if it even exists) probably does not have 5 oxygens directly on sulfur, it is most likely something that has a peroxy linkage such as: 

HOO(HO)SO2 where 2 O's are double bonded to sulfur, one -OH group and one peroxy group -OOH. 

This would give a sulfur in the S+6 oxidation state.