5．（2023•平顶山模拟）已知函数f(x)=sin(ωx+φ)(ω>0,0<φ<π2),y=f(x+π4)f(x)=\sin (\omega x+\varphi )(\omega >0,0<\varphi <\frac{\pi }{2}),y=f(x+\frac{\pi }{4})f(x)=sin(ωx+φ)(ω>0,0<φ<2π),y=f(x+4π)是偶函数，且f(−π4−x)+f(−π4+x)=0,f(x)f(-\frac{\pi }{4}-x)+f(-\frac{\pi }{4}+x)=0,f(x)f(−4π−x)+f(−4π+x)=0,f(x)在(π18,π4)(\frac{\pi }{18},\frac{\pi }{4})(18π,4π)上单调，则ω\omegaω的最大值为((( )))