Eta product for mf.24.2.1.a (awaiting review)

This cusp form can be expressed as an eta product $\eta(2z)\eta(4z)\eta(6z)\eta(12z)=q\prod_{n=1}^\infty(1-q^{2n})(1-q^{4n})(1-q^{6n})(1-q^{12n})$, where $q=e^{2\pi iz}$.