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