u.pdb',
				'Fluorite': 'caf2.pdb',
				'Salt': 'nacl.pdb',
				'YBCO superconductor': 'ybco.pdb',
				'Buckyball': 'buckyball.pdb',
				'Graphite': 'graphite.pdb'
			};

			const params = {
				molecule: 'caffeine.pdb'
			};

			const loader = new PDBLoader();
			const offset = new THREE.Vector3();

			init();

			function init() {

				scene = new THREE.Scene();
				scene.background = new THREE.Color( 0x050505 );

				camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 500