foreach (string molecule in righ)
            {
                int index = molecule.IndexOf(elem);
                if (index == -1) buildArr.Add(-1);
                else
                {
                    index += elem.Length;
                    Match numberAfterElement = Regex.Match(molecule.Substring(index), @"^\d+");
                    if (numberAfterElement == null || !numberAfterElement.Success)
                    {
                        buildArr.Add(-1);
                    }
                    else
                    {
                        buildArr.Add(-1 * Int32.Parse(numberAfterElement.Value));
                        string test = "";
                        foreach (var z in buildArr) test += $"{z}, ";
                        Debug.Log(test);
                    }
                }
            }
            rrefArray.Add(buildArr);

foreach (string molecule in righ)
            {
                int index = molecule.IndexOf(elem);
                if (index == -1) buildArr.Add(-1);
                else
                {
                    index += elem.Length;
                    Match numberAfterElement = Regex.Match(molecule.Substring(index), @"^\d+");
                    if (numberAfterElement == null || !numberAfterElement.Success)
                    {
                        buildArr.Add(-1);
                    }
                    else
                    {
                        buildArr.Add(-1 * Int32.Parse(numberAfterElement.Value));
                        string test = "";
                        foreach (var z in buildArr) test += $"{z}, ";
                        Debug.Log(test);
                    }
                }
            }
            rrefArray.Add(buildArr);