Advantageously, the tetracopper tetroxide contains two copper ions, {HEAD ~ two copper ions}, and four oxygen atoms in {TAIL ~ a crystal lattice} 
Advantageously , the tetracopper tetroxide contains two copper ions , { HEAD ~ two copper ions } , and four oxygen atoms in { TAIL ~ a crystal lattice }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL