What is the CKM element for J psi and phi meson

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Homework Statement
Estimate the branching fraction of B0s to J/psi and phi
Relevant Equations
the ckm matrix
I am given the ckm matrix and told that B0s decay to Ds- and pi+ with a branching frcation of 3x10-3. I am then asked to find the branching fraction for other decays. I have done this easily enough for decays like B0s to Ds-K+ by using the ckm matrix elements. However the J/psi meson is a charm anticharm meson. Im just not to sure what value to take from the CKM matrix and would love some help!
 

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