\frac{dx_{1}}{dt} = -1 \cdot k_{11} \cdot \left(k_{8} \cdot \frac{2187}{5000} + k_{9} \cdot \frac{1957}{5000} + k_{10} \cdot \frac{4047}{10000}\right) \cdot k_{2} \cdot 1 - \left(k_{8} \cdot \frac{49}{625} + k_{9} \cdot \frac{9}{200} + k_{10} \cdot \frac{233}{5000}\right)^{t} \cdot x_{1} \cdot x_{2} / \left(x_{2} + x_{3} + x_{1}\right) / k_{11}\\
\frac{dx_{2}}{dt} = \left(1 \cdot k_{11} \cdot \left(k_{8} \cdot \frac{2187}{5000} + k_{9} \cdot \frac{1957}{5000} + k_{10} \cdot \frac{4047}{10000}\right) \cdot k_{2} \cdot 1 - \left(k_{8} \cdot \frac{49}{625} + k_{9} \cdot \frac{9}{200} + k_{10} \cdot \frac{233}{5000}\right)^{t} \cdot x_{1} \cdot x_{2} / \left(x_{2} + x_{3} + x_{1}\right) + -1 \cdot k_{11} \cdot \left(k_{8} \cdot \frac{1}{40} + k_{9} \cdot \frac{21}{500} + k_{10} \cdot \frac{1}{20}\right) \cdot x_{2}\right) / k_{11}\\
\frac{dx_{3}}{dt} = 1 \cdot k_{11} \cdot \left(k_{8} \cdot \frac{1}{40} + k_{9} \cdot \frac{21}{500} + k_{10} \cdot \frac{1}{20}\right) \cdot x_{2} / k_{11}