Let Lx, Rx, Ly, Ry, x and y be given.
Assume HLRx HLRy Hxe Hye.
Apply mul_SNoCutP_lem Lx Rx Ly Ry x y HLRx HLRy Hxe Hye to the current goal.
Assume _ H.
An exact proof term for the current goal is H.