Problems with the image sequence!

I am trying to composite image sequence with image input node, but the problem is environment connector doesn’t show in image input node( only showing ‘Image’,‘Alpha’, and ‘Z’, even i have enabled environment in render passes. Environment connector shows up when i use ‘Render Layers’ node but i can’t use image sequence with ‘Render Layers’ node. Please explain how do i get the image sequence with environment option as well!

To render out an image sequence with the different passes save in the OpenEXR Multilayer format. In the image input node set the layer to RenderLayer