pentatriacontane

from The Century Dictionary.

• noun A solid hydrocarbon of the paraffin series, C₃₅H₇₂. Normal pentatriacontane is the only variety known. It melts at 74.7° C. and boils at 331° C. at 15 millimeters pressure. It is made synthetically.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun organic chemistry Any of very many isomers of the aliphatic hydrocarbon having thirty-five carbon atoms, but especially n-pentatriacontane CH3(CH2)33CH3