\frac{dx_{1}}{dt} = \left(1 \cdot k_{14} \cdot k_{1} \cdot x_{1} + -1 \cdot k_{14} \cdot k_{1} \cdot k_{2} \cdot x_{1} \cdot x_{1} + -1 \cdot k_{14} \cdot k_{4} \cdot x_{2} \cdot x_{1} / \left(k_{5} + x_{1}\right)\right) / k_{14}\\
\frac{dx_{2}}{dt} = \left(-1 \cdot k_{14} \cdot k_{8} \cdot x_{2} + 1 \cdot k_{14} \cdot k_{3} \cdot x_{1} + 1 \cdot k_{14} \cdot k_{9} \cdot x_{2} \cdot x_{3} / \left(k_{10} + x_{3}\right) + 1 \cdot k_{14} \cdot k_{6}\right) / k_{14}\\
\frac{dx_{3}}{dt} = \left(1 \cdot k_{14} \cdot k_{7} + -1 \cdot k_{14} \cdot k_{13} \cdot x_{3} + 1 \cdot k_{14} \cdot k_{11} \cdot x_{2} \cdot x_{1} / \left(k_{12} + x_{1}\right)\right) / k_{14}