facing issue to get xpath of the element present in Shadow DOM

enter image description here

I am using robot framework for automation and want to click on element print button(Please refer attach image for Html Code) on Shadow Dom. I have created variable using js path but it is not working. Can any one help to find exact xpath of the element

*** Variables ***

${chrome} chrome

${print} ${printIRCF1}

${JSPath}=  document.querySelector('print-preview-app').shadowRoot           
       ...  .querySelector('print-preview-sidebar')  
       ...  .querySelector('print-preview-button-strip').shadowRoot  
       ...  .querySelector('controls')  
       ...  .querySelector('action-button').shadowRoot

Can any one help me with the correct JsPath or with xpath so that I can use it in my code