Problem with my mod. Error CS0103

using Terraria;
using Terraria.ID;
using Terraria.ModLoader;

namespace Apocalypse.Items.Placeable
{
    public class UraniumOrePlaceable : ModItem
    {
        public override void SetDefaults()
        {
            item.name = "Uranium Ore";
            item.width = 8;
            item.height = 8;
            item.maxStack = 999;
            AddTooltip("Maybe I can do something with this.");
            item.useTurn = true;...