My Model Name Is Not A Valid Java Name

When I tried exporting a file from blockbench Mcreator said it wasn't a valid java name I looked at multiple forums but it still doesn't work someone plz help

Here is the code:

// Made with Blockbench 3.6.6
// Exported for Minecraft version 1.14
// Paste this class into your mod and generate all required imports

public class terrem1234 extends EntityModel {
    private final RendererModel bb_main;

    public terrem1234() {
        textureWidth = 32;
        textureHeight = 32;

        bb_main = new RendererModel(this);
        bb_main.setRotationPoint(0.0F, 24.0F, 0.0F);
        bb_main.cubeList.add(new ModelBox(bb_main, 0, 0, -3.0F, -9.0F, -1.0F, 6, 4, 3, 0.0F, false));
        bb_main.cubeList.add(new ModelBox(bb_main, 5, 17, -1.0F, -5.0F, -1.0F, 2, 1, 3, 0.0F, false));
        bb_main.cubeList.add(new ModelBox(bb_main, 15, 4, -4.0F, -9.0F, -1.0F, 1, 3, 3, 0.0F, false));
        bb_main.cubeList.add(new ModelBox(bb_main, 10, 10, -3.0F, -4.0F, -1.0F, 2, 4, 3, 0.0F, false));
        bb_main.cubeList.add(new ModelBox(bb_main, 0, 7, 1.0F, -4.0F, -1.0F, 2, 4, 3, 0.0F, false));
        bb_main.cubeList.add(new ModelBox(bb_main, 0, 14, 3.0F, -9.0F, -1.0F, 1, 3, 3, 0.0F, false));
        bb_main.cubeList.add(new ModelBox(bb_main, 19, 19, -5.0F, -8.0F, 0.0F, 1, 6, 1, 0.0F, false));
        bb_main.cubeList.add(new ModelBox(bb_main, 15, 17, 4.0F, -8.0F, 0.0F, 1, 6, 1, 0.0F, false));
        bb_main.cubeList.add(new ModelBox(bb_main, 7, 7, -1.0F, -9.0F, 2.0F, 2, 2, 1, 0.0F, false));
    }

    @Override
    public void render(Entity entity, float f, float f1, float f2, float f3, float f4, float f5) {
        bb_main.render(f5);
    }

    public void setRotationAngle(RendererModel modelRenderer, float x, float y, float z) {
        modelRenderer.rotateAngleX = x;
        modelRenderer.rotateAngleY = y;
        modelRenderer.rotateAngleZ = z;
    }