\[ y'(x)^2 \sin \left (y'(x)\right )-y(x)=0 \] ✓ Mathematica : cpu = 0.0798205 (sec), leaf count = 34
DSolve[-y[x] + Sin[Derivative[1][y][x]]*Derivative[1][y][x]^2 == 0,y[x],x]
\[\text {Solve}\left [\left \{x=K[1] \sin (K[1])-\cos (K[1])+c_1,y(x)=K[1]^2 \sin (K[1])\right \},\{y(x),K[1]\}\right ]\] ✓ Maple : cpu = 0.069 (sec), leaf count = 32
dsolve(diff(y(x),x)^2*sin(diff(y(x),x))-y(x)=0,y(x))
\[y \left (x \right ) = 0\]