(match NCicLibrary.get_obj u with
| _,_,_,_, C.Inductive (_,_,itl,_) ->
let _,_,_,cl = List.nth itl i in
let _,name,_ = List.nth cl (j-1) in name
| _ -> assert false)
(match NCicLibrary.get_obj u with
| _,_,_,_, C.Inductive (_,_,itl,_) ->
let _,_,_,cl = List.nth itl i in
let _,name,_ = List.nth cl (j-1) in name
| _ -> assert false)