public String toString()
	{
//		System.out.println("elements length: "+elements.length);
//		System.out.println("elements quantity: "+Element.properties(elements[0]));
		
		String out = "";
		for(int i = 0; i < elements.length; i++)
			out += elements[i].toString();
		
		if(quantity > 1)
			out = "("+out+")"+quantity;
		
		return out;
	}