c_1, x_1, x_2, x_3, x_5, x_6, x_7, 
-c_1*(129660*c_1*x_1^2+110580*c_1*x_1*x_2+21320*c_1*x_2^2-7794*x_1^3-5457*x_1^2*x_2-958*x_1*x_2^2)
168*c_1^2+3*x_1*x_6+2*x_2*x_6
-39*x_1^2-38*x_1*x_2-8*x_2^2+392*x_3
-8871*x_1^3-1103*x_1^2*x_2+2158*x_1*x_2^2+520*x_2^3
56791640*c_1^4*x_1^2-10956088*c_1^4*x_1*x_2-10397920*c_1^4*x_2^2+147*x_1^4*x_5^2
14338095816*c_1^5*x_1^2+9288511048*c_1^5*x_1*x_2+1511200912*c_1^5*x_2^2+959833473*x_1^2*x_7+632954969*x_1*x_2*x_7+105176786*x_2^2*x_7
