* Valence: Sulfur (S) typically has a valence of +2, +4, or +6, while oxygen (O) usually has a valence of -2. The formula S2O3 would imply an overall charge of -2 for the compound, which is unusual for simple compounds.

* Common Anions: The most common sulfur-oxygen anion is sulfite (SO3^2-). This anion has a charge of -2 and is used in many compounds.

Possible Interpretations:

* Typo: It's possible you meant to write a different formula, like SO3 (sulfur trioxide) or S2O6 (disulfur hexoxide).

* Complex Ions: There are complex sulfur-oxygen ions, like thiosulfate (S2O3^2-), that are used in chemistry but have a more complicated structure.

To get the name of a compound, you need a correct and valid chemical formula.