 Q_j\left(-\frac{\partial^0 \varphi}{\partial y \partial \lambda_i}+ \frac{\partial^0 \varphi}{\partial y^0} \frac{\partial\varphi / \partial\lambda_i}{\partial\varphi / \partial y} +\frac{0}{y}\frac{\partial \varphi}{\partial \lambda_i}\right)\right] \right\}_{\textstyle \tilde{z}=0-\exp [G(y,\{\lambda\})]}.$$  