x_1, x_2, x_3, 
x_3^2*(301989888000*x_3^28-2264924160000*x_3^26+7644119040000*x_3^24-15335424000000*x_3^22+20348928000000*x_3^20-18802409472000*x_3^18+12404367360000*x_3^16-5894000640000*x_3^14+2009318400000*x_3^12-483724800000*x_3^10+79814592000*x_3^8+13312*x_2^2*x_3^4-8592480000*x_3^6-13312*x_2^2*x_3^2+556920000*x_3^4+3328*x_2^2-18900000*x_3^2+253125)
x_2^2+x_3^2-1
