public void HillNotationDelimiterWithHeavyIsotopes()
        {
            ChemicalFormula formulaA = new ChemicalFormula("H3NC2C{13}O");

            Assert.AreEqual("C2 C{13} H3 N O", formulaA.GetHillNotation(" "));
        }
        public void HillNotationDelimiter()
        {
            ChemicalFormula formulaA = new ChemicalFormula("H3NC2O");

            Assert.AreEqual("C2 H3 N O", formulaA.GetHillNotation(" "));
        }
        public void HillNotationAndFormulaEquality()
        {
            ChemicalFormula formulaA = new ChemicalFormula("H3NC2C{13}-2O");

            Assert.AreEqual(formulaA.GetHillNotation(), formulaA.Formula);
        }
        public void HillNotationDelimiterWithHeavyIsotopes()
        {
            ChemicalFormula formulaA = new ChemicalFormula("H3NC2C{13}O");

            Assert.AreEqual("C2 C{13} H3 N O", formulaA.GetHillNotation(" "));
        }
        public void HillNotationDelimiter()
        {
            ChemicalFormula formulaA = new ChemicalFormula("H3NC2O");

            Assert.AreEqual("C2 H3 N O", formulaA.GetHillNotation(" "));
        }
        public void HillNotationAndFormulaEquality()
        {
            ChemicalFormula formulaA = new ChemicalFormula("H3NC2C{13}-2O");

            Assert.AreEqual(formulaA.GetHillNotation(), formulaA.Formula);
        }