We apply the Wiener-Hopf factorization technique to the Chandler-Silbey-Ladanyi equations with the Percus-Yevick closure for a general fluid composed of hard-sphere interaction sites. We analytically solve these equations for symmetric n-atomic tangent hard-sphere molecules (n less than or equal to 4), and obtain closed analytical expressions for the equation of stare and other thermodynamic properties of the fluid.