i'm trying to get this value through this object with key the value of an other object.

if the the target object is a simple value, it works but doesnt if is this is a nested object.

let obj1 = {
     "a" :{
         "c":"valueOfIntrest"
         "d":"otherValue"
     }
    }
    let obj2 = {
      "b":"a.c"
    }
    console.log( obj1[obj2.b] )
    //this should return valueOfIntrest 

how should i achieve it ?