What is the complement of the function $F=\frac{x}{b}ar(Y)+(x\frac{+}{b}ar(Y)Z)\frac{+}{b}ar(Y)?$

$(\stackrel{}{x}+Y)*(\stackrel{}{x}*(Y\frac{+}{b}ar(Z)))*Y$

$(\stackrel{}{x}\frac{+}{b}ar(Y))*(\stackrel{}{x}*(Y\frac{+}{b}ar(Z)))*Y$

$(\stackrel{}{x}+Y)*(\stackrel{}{x}*(\frac{?}{\text{b}\text{a}\text{r}}(Y)+Z))*Y$

$(x\frac{+}{b}ar(Y))*(\stackrel{}{x}*(\frac{?}{\text{b}\text{a}\text{r}}(Y)+Z))*Y$