E32F − E-3-(2-furyl)propenoic acid E32T − E-3-(2-thienyl)propenoic acid E32S − E-3-(2-selenienyl)propenoic acid E33P − E-3-(3-pyridyl)propenoic acid E23T33T-E-2-(3-thienyl)-3-(3-thienyl)propenoic acid Z2Ph33P-Z-2-phenyl-3-(3-pyridyl)propenoic acid Z − "Z" instead of "E" before the shorthand names of the materials listed above, means the Z isomer M − at the end of the shorthand names of the materials listed above, means the individual monomer