using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
 
public class Test
{
	public static void Main()
	{
		var text = @"(A) name1, name2, name3, name3 (B) name4, name5, name7 (via name7) ..... (AA) name47, name47 (via name 46) (BB) name48, name49";
    	var results = Regex.Matches(text, @"(?s)(.*?)(?:\(([A-Z])\2*\)|\z)")
		        .Cast<Match>()
		        .Select(x => x.Groups[1].Value)
		        .Where(z => !string.IsNullOrEmpty(z))
		        .ToList();
        foreach (var s in results)
        	Console.WriteLine(s);
	}
}

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