Why is the derivative of Ln (2x + 3) 2 / (2x + 3) Not 2 / x?

Why is the derivative of Ln (2x + 3) 2 / (2x + 3) Not 2 / x?

This is a composite function
lnx ' =1/x
ln(2x+3) =1/2x+3 (2x+3)'
=2/2x+3