Help translating excel equation to matlab

I have the following equation in excel that I am trying to translate into matlab code...with much difficulty

=IF(M5>$AD$17,$AD$5+$AD$8,IF(N5>0,$AD$5+(O4-$AD$5)*EXP((IF(F5>273.16,$AD$11,$AD$14))*0.04167),0))

I don't know how to handle the last embedded IF statement...

This is what I have come up with, but I keep getting an error.

if T(t)>273.16;
        Z(t)=DPp;
    else
        Z(t)=DPn;
    end

      if Ps(t)>SS;    %Albedo
          Albedo(t)=Amin+Aadd;
          if SnowAge(t)>0;
              Albedo(t)=Amin+(Albedo(t-1)-Amin)*exp(Z(t)*0.04167);
          else   
             Albedo(t)= 0;
          end
      end

Thank you for any direction/help

[Geoff Hayes]

Jessica - if I translate the Excel statement into something like pseudocode, wouldn't the above be

 IF(M5>$AD$17)
    x = $AD$5+$AD$8;
 ELSE
    IF(N5>0)
        IF(F5>273.16)
            y = $AD$11;
        ELSE
            y = $AD$14;
        END
        x = $AD$5+(O4-$AD$5)*EXP(y*0.04167);
     ELSE
        x = 0;
     END
 END

where x is the value of the cell that contains this Excel code (y is just a temporary value).