Compound, precursor compound thereof, surfactant composition, and detergent composition

A compound represented by a chemical formula (1) below:

• wherein R1 and R2 are each an aliphatic hydrocarbon group, X is a single bond or a hydrocarbon group having 1 or more and 5 or less carbon atoms, a total number of carbon atoms of R1, R2, and X is 2 or more and 39 or less, A1 is —O(-A11O)m—H or —O(-A12O)p—H, A2 is —O—R3O(-A21O)n—H or —O-A221O(-A22O)q—H, R3 is an alkanediyl group having 4 or more and 18 or less carbon atoms, A11 and A21 are each independently an alkanediyl group having 2 or more and 3 or less carbon atoms, A12 and A22 are each independently an alkanediyl group having 2 or more and 8 or less carbon atoms, A221 is a linear alkane-α,ω-diyl group having 3 or more and 8 or less carbon atoms, m, n, p, and q are an average value and are each independently 0 or more, a total of m and n is more than 0 and 50 or less, and a total of p and q is more than 0 and 50 or less.