0.7695 - 3.308 \eta - 1.446 \eta \chi_+ - 61.87 \eta^3 + 72.14 \eta^2 \chi_+ - 127.1 \eta^2 \chi_- - 2.769 \eta \chi_+ \chi_- + 0.3681 \eta \chi_-^2 - 0.5065 \chi_+ \chi_-^2 + 0.5483 \chi_-^3 + 293.4 \eta^4 - 527.6 \eta^3 \chi_+ + 1110 \eta^3 \chi_- + 11.14 \eta^2 \chi_+ \chi_- + 2.18 \eta \chi_+ \chi_-^2 - 2.023 \eta \chi_-^3 + 1014 \eta^4 \chi_+ - 2407 \eta^4 \chi_-