A feed containing $10 \text{ mol \%}$ propylene, $15 \text{ mol \%}$ ammonia and rest air is charged into a reactor to produce acrylonitrile ($C_3H_3N$) according to the following reaction: $$2C_3H_6 + 2NH_3 + 3O_2 \rightarrow 2C_3H_3N + 6H_2O$$ Assume air contains $80 \text{ mol \% } N_2$ and $20 \text{ mol \% } O_2$. If the conversion of the limiting reactant is $30\%$, the composition of $C_3H_3N$ (in mol %) in the product stream is ___________(rounded off to two decimal places).