Question: ScientificConstants the derive descriptor and the Fine Structure Constant

For example the elemetary charge e constant has the derive descriptor.  Having the descriptor in it, I might have thought there is a builtin way to pull out the derive equation there isn't so one has to do it this way

with(ScientificConstants):
rhs(GetConstant(e)[3])
                                    

However you wouldn't know the 3rd indexed position in the constant was the derive descriptor - it could be in a different location for another constant.

Also, what I wonder is, where is the derive for the Fine Structure Constant

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