using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
 
public class Test
{
	public static void Main()
	{
		string pattern = @"(?:""[^""]*""|\([^()]*\)|[^,])+";
		string input = "Selectroasted peanuts,Sugars (sugar, fancymolasses),Hydrogenatedvegetable oil (cottonseed and rapeseed oil),Salt."; 
		foreach (Match m in Regex.Matches(input.TrimEnd(new[] {'!', '?', '.', '…'}), pattern)) 
		{ 
			Console.WriteLine("{0}", m.Value); 
		}
	}
}

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