It is hereby agreed and declared that this Agreement is an instrument employed in the transaction to secure the sum of Thai Baht Seven Hundred Forty Three Million Three Hundred and Eighty Six Thousand One Hundred and Sixteen (THB743,386,116) for principal only and interest thereon and all monies due and payable under this Agreement within the meaning of Section 4(3) of the Stamp Act 1949, and for the purpose of the said section, this Agreement is deemed to be the principal instrument.