Is it possible to calculate the standard error of beta0 and beta1 with only their Estimates and Confidence Intervals in R?

How do you calculate the standard error of beta0 and beta1 using only their Estimates and Confidence Intervals and the qt function in R?

Example:

       Est   SE    L    U
beta0 1.13 0.241 0.889 1.37
beta1 3.57 1.620 1.950 5.19