\frac{dx_{1}}{dt} = \left(1 \cdot k_{1} / \left(1 + x_{4} / k_{25}^{2} + x_{6} / k_{26}^{2}\right) + 1 \cdot k_{2} \cdot k_{46} \cdot x_{12} / \left(1 + x_{4} / k_{25}^{2} + x_{6} / k_{26}^{2}\right) + -1 \cdot k_{7} \cdot k_{46} \cdot x_{1} + -1 \cdot k_{9} \cdot k_{47} \cdot x_{1}\right) / k_{48}\\ \frac{dx_{2}}{dt} = \left(1 \cdot k_{13} \cdot x_{1} + 1 \cdot k_{14} \cdot k_{46} \cdot x_{1} + -1 \cdot k_{18} \cdot x_{2}\right) / k_{48}\\ \frac{dx_{3}}{dt} = \left(1 \cdot k_{8} \cdot k_{46} \cdot x_{12} / \left(1 + x_{6} / k_{28}^{2} + x_{8} / k_{29}^{2}\right) + 1 \cdot k_{3} / \left(1 + x_{6} / k_{28}^{2} + x_{8} / k_{29}^{2}\right) + 1 \cdot k_{4} \cdot x_{2}^{2} / \left(k_{27}^{2} + x_{2}^{2}\right) / \left(1 + x_{6} / k_{28}^{2} + x_{8} / k_{29}^{2}\right) + -1 \cdot k_{10} \cdot x_{3}\right) / k_{48}\\ \frac{dx_{4}}{dt} = \left(1 \cdot k_{15} \cdot x_{3} + -1 \cdot k_{19} \cdot k_{47} \cdot x_{4} + -1 \cdot k_{20} \cdot k_{46} \cdot x_{4}\right) / k_{48}\\ \frac{dx_{5}}{dt} = \left(1 \cdot k_{5} / \left(1 + x_{2} / k_{30}^{2} + x_{6} / k_{31}^{2}\right) + -1 \cdot k_{11} \cdot x_{5}\right) / k_{48}\\ \frac{dx_{6}}{dt} = \left(1 \cdot k_{16} \cdot x_{5} + -1 \cdot k_{21} \cdot k_{47} \cdot x_{6} + -1 \cdot k_{22} \cdot k_{46} \cdot x_{6}\right) / k_{48}\\ \frac{dx_{7}}{dt} = \left(1 \cdot k_{46} \cdot k_{6} / \left(1 + x_{2} / k_{32}^{2} + x_{6} / k_{33}^{2} + x_{8} / k_{34}^{2}\right) + -1 \cdot k_{12} \cdot x_{7}\right) / k_{48}\\ \frac{dx_{8}}{dt} = \left(1 \cdot k_{17} \cdot x_{7} + -1 \cdot k_{23} \cdot k_{47} \cdot x_{8} + -1 \cdot k_{24} \cdot k_{46} \cdot x_{8}\right) / k_{48}\\ \frac{dx_{9}}{dt} = \left(1 \cdot k_{35} / \left(1 + x_{8} / k_{42}^{2}\right) + -1 \cdot k_{36} \cdot x_{9}\right) / k_{48}\\ \frac{dx_{10}}{dt} = \left(1 \cdot k_{37} \cdot x_{9} + -1 \cdot k_{39} \cdot k_{47} \cdot x_{10} + -1 \cdot k_{38} \cdot k_{46} \cdot x_{10}\right) / k_{48}\\ \frac{dx_{11}}{dt} = \left(1 \cdot k_{40} + 1 \cdot k_{41} \cdot x_{10}^{2} / \left(k_{43}^{2} + x_{10}^{2}\right)\right) / k_{48}\\ \frac{dx_{12}}{dt} = \left(1 \cdot \frac{3}{10} \cdot \left(1 - x_{12}\right) \cdot k_{47} + -1 \cdot x_{12} \cdot k_{46}\right) / k_{48}