JEE Main 2022 Chemistry question

Which of the following is NOT an example of synthetic detergent?

• (1)CH_{3}-(CH_{2})_{11}-C_{6}H_{4}-SO_{3}^{-}Na^{+}
• (2)CH_{3}-(CH_{2})_{16}-COO^{-}Na^{+}Correct
• (3)[CH_{3}-(CH_{2})_{15}-N^{+}(CH_{3})_{3}]Br^{-}
• (4)CH_{3}(CH_{2})_{16}COO(CH_{2}CH_{2}O)_{n}CH_{2}CH_{2}OH