Times[Rational[1, 2], Plus[Times[3, Power[x, 3], Plus[c[3, 1], Times[-10, c[3, 3]]]], Times[Power[y, 2], z, Plus[Times[30, c[3, 2]], Times[-3, j[3]]]], Times[2, Power[z, 3], j[3]], Times[-12, y, Power[z, 2], s[3, 1]], Times[3, x, Plus[Times[-4, Power[z, 2], c[3, 1]], Times[Power[y, 2], Plus[c[3, 1], Times[30, c[3, 3]]]], Times[-20, y, z, s[3, 2]]]], Times[3, Power[y, 3], Plus[s[3, 1], Times[10, s[3, 3]]]], Times[-3, Power[x, 2], Plus[Times[10, z, c[3, 2]], Times[z, j[3]], Times[-1, y, s[3, 1]], Times[30, y, s[3, 3]]]]]]