question about second-order ode identification

[xiongxin9000]

Hi, I would like to identify second-order ode below: $$(R 1)^{\prime}=1.000 R 2 $$

$$ (R2)' = \frac{3.6521}{R_1 \cdot \ln\left(\frac{1}{R_1}\right)} + \frac{0.0051}{R_2 \cdot \ln\left(\frac{1}{R_2}\right)} - \frac{34.8451}{R_1^{2} \cdot \ln\left(\frac{1}{R_1}\right)} + \frac{339.376 \cdot R_2}{R_1^{2} \cdot \ln\left(\frac{1}{R_1}\right)} - \frac{2287.1912^{2}}{R_1 \cdot \ln\left(\frac{1}{R_1}\right)} - \frac{0.242 \cdot R_1^{2} \cdot R_2^{2}}{\ln\left(\frac{1}{R_1}\right)} - \frac{732.746 \cdot R_2^{2}}{R_1} $$

but I whatever I use customised or generalized library, it always comes with R1 and R2 term in second equation which I don't want or that two terms disappear but the first equation is not what I want with $(R 1)^{\prime}=1.000 R 2 $