Strange behaviour with backslash followed by curly braces

I am getting an unexpected result when the following format and settings are used.

```csharp
var formatter = Smart.CreateDefaultSmartFormat();
formatter.Settings.ConvertCharacterStringLiterals = false;

var result = formatter.Format("\\{Test}", new { Test = "Hello" });
```

Expected Result: `Hello`
Actual Result: `{Test`