Chilean ambassador Julio Cordano took over the role earlier this year after his predecessor resigned, and with the talks having overrun their initial schedule by more than a year.
But speaking in Bangkok after informal closed-door talks with heads of delegations, Cordano said he was hopeful a deal could be clinched at the next official round of negotiations.
"My plan and my expectation is that we will be able to adopt the treaty in INC 5.4 (Marc…