Prompt [Q] Problem coding with android studio

it seems I have a single bug that I can't seem to clarify and fix
Code:

public static final class id {
public static final int Nexus 5 (5_0")=0x7f070001;
public static final int dummy_button=0x7f070003;
public static final int fullscreen_content=0x7f070000;
public static final int fullscreen_content_controls=0x7f070002;
public static final int switch2=0x7f070004;

in the second line, it underlines( Nexus 5 (5_0")=0x7f070001; ) and show it as a bug when I run the app. what did I do wrong, was renaming the device in the design section cause an error to happen in the code?