A network of p-orbitals in a molecule, often found in aromatic compounds.
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2,7,12,17-tetra(pyren-1-yl) 5,10,15,20-tetrahexylcycloocta[1,2-b:3,4-b':5,6-b'':7,8-b''']tetraindole
2-(2-thienyl)-3-(ethoxycarbonyl)-4-phenyl-1,5-diazabicyclo[3.3.0]oct-3-en-6-one
N-methoxy-N-methyl-(S)-1-triphenylmethyl-aziridine-2-carboxamide
