While Iran and the Group 5+1 (Russia, China, the US, Britain, France and Germany) on Tuesday gave themselves an extra week to nail down details of a long-awaited nuclear deal beyond an end-June deadline, Abbas Araqchi expressed the hope for good results within the additional seven days.
The senior negotiator, however, explained that Iran is not and will never be restrained by time limits, even if the talks fail to produce results.
"For us, reaching a good agreement –with the defined criteria- is important, not the notion that it (the talks) must end at a definite time," Araqchi added.
He further said the negotiating parties are seriously working round the clock in Vienna in a "positive atmosphere".
The spirit of moving ahead is there among all parties, Araqchi said, but noted that it does not mean that the delegations, including the Iranian one, are ready to make agreement at any price.
High-profile diplomatic meetings over a lasting deal on Tehran's nuclear program have resumed in the Austrian capital on Wednesday after the two sides agreed to continue talks for more 7 days in the hope of clinching a deal.
Back on April 2, Iran and the six nations reached a framework nuclear agreement in Lausanne, Switzerland, that provides outlines of a final agreement, known as the Joint Comprehensive Plan of Action (JCPOA).