\textbf{223.} The molecular formula of a branched-chain alkyl sulfonate surfactant that has 14 carbon atoms is which of the following?
(1) $\mathrm{C_{14}H_{29}SO_4Na}$ \quad (2) $\mathrm{C_{14}H_{29}SO_4Na}$ \quad (3) $\mathrm{C_{20}H_{33}SO_4Na}$ \quad (4) $\mathrm{C_{20}H_{33}SO_4Na}$
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