C8-H12-Mg-Nc-O8 appears to represent a chemical formula, but it doesn't correspond to a widely recognized compound. It suggests a molecule containing carbon (C), hydrogen (H), magnesium (Mg), nitrogen (N), and oxygen (O), but without additional context or information, it's difficult to determine its specific identity or properties. If you have more details or context about where you encountered this formula, I could provide a more accurate response.