There are many molecules that can contain more than 1000 atoms. Some examples include:
Proteins: Proteins are large biological molecules made up of amino acids. Many proteins have thousands of atoms. For example, the protein hemoglobin, which carries oxygen in our blood, contains around 10,000 atoms.
DNA: Deoxyribonucleic acid (DNA) is a complex molecule that carries genetic information in living organisms. DNA molecules can have thousands to millions of atoms, depending on their length.
Polymers: Polymers are large molecules composed of repeating subunits called monomers. Synthetic polymers like polyethylene or polystyrene can have chains containing thousands or even millions of atoms.
Complex organic molecules: Certain organic molecules, particularly those found in natural products or pharmaceuticals, can have a large number of atoms. For instance, the antibiotic vancomycin contains over 3,000 atoms.
Fullerenes: Fullerenes are carbon-based molecules that can have unique shapes, such as a soccer ball-like structure (C60 fullerene) or cylindrical tubes (carbon nanotubes). Fullerenes can consist of hundreds or even thousands of carbon atoms.
Macrocycles: Macrocycles are large cyclic molecules that often have diverse applications, including in medicine and materials science. Some examples, like cyclodextrins or porphyrins, can contain more than 1000 atoms.
These are just a few examples, and there are many other types of molecules that can contain more than 1000 atoms. The size and complexity of molecules can vary greatly depending on their function, structure, and the elements they are composed of.