can you tell me what gives the invalid parenthensis with this formula?:

is it the Ln function which recieves a value higher than a Double or just some wrong brackets?(234.67*0.434292289*Ln(6.1*exp((7.45*temp.Value)/(234.67+temp.Value)*

2.3025851)*lf.Value/100/6.1))/(7.45-0.434292289*Ln(6.1*exp((7.45*

temp.Value)/(234.67+temp.Value)*2.3025851)*lf.Value/100/6.1))