$par
[1] 1961.5336746 1977.7535788 2023.6987714 2024.9808483    0.8849864

$objective
[1] 0.3972497

$convergence
[1] 0

$iterations
[1] 37

$evaluations
function gradient 
      47      214 

$message
[1] "both X-convergence and relative convergence (5)"

