Alkanes are saturated hydrocarbons that belong to a homologous series with the general formula CnH2n+2C_nH_{2n+2}CnH2n+2.
A component isolated from a heavy distillate fraction of crude oil is identified as a straight-chain alkane containing a total of 74 atoms in each of its molecules.
Determine the number of carbon atoms present in a single molecule of this alkane, and write down its complete molecular formula.