Wing Clip Macro Assistance

[:1]Hello all,

I'm trying to create a macro which will use Serpent Sting if able, and if the target is too close to be fired at, then use Wing Clip... assuming this is possible.

I use this macro on my Warrior to Charge if able, and to Hamstring if the target is too close, but I haven't been able to adapt it for Wing Clip successfully:

#showtooltip [form:1/2] Charge; Intercept
/cast [help,nostance:2] Defensive Stance; [help] Intervene; [mod:alt,@focus] Charge; Charge
/cast Hamstring
/cast [mod:shift,stance:1/2] Berserker Stance; [mod:alt,@focus] Intercept; Intercept


Any ideas how to make this work?