all grey backbone on off
601 red spacefill on off
602 red spacefill on off
603 green spacefill on off
604 green spacefill on off
atomno=9441 red spacefill on BCL:601
atomno=9506 red spacefill on BCL:602
atomno=9572 green spacefill on BCL:603
atomno=9639 green spacefill on BCL:604