I need a ROGUE MACRO to sap stealthed rogues for arenas 2v2 in one press without targeting and sapping my focus set.

Something like this:

#showtooltip Sap
/console targetNearestDistance 10,000000
/targetenemy [noharm][dead]["and he is not the focus"]
/console targetNearestDistance 41.000000
/cast [harm,nodead,"and he is not the focus"] Sap

what conditional i need to substitute for [and he is not the focus]?
or wich new macro i have to use to be able to do what i want?

In 2v2 i always set the no stealthed enemy as my focus, if the second enemy is a rogue stealthed, i want to be able to target the rogue and sap him in one press button whithout targeting and sapping the focus, cuz after saping the rogue i will sap the focus and i dont want to have wasted on focus a disminishing return for the sap. And i also i dont want loosing time targeting the no stealthed enemy (the focus set) cuz i loose time and then i give more chance to the other rogue to sap me b4 i sap him.

srry for my low level of english , i hope u understand what i need.