Requested WoW macro

Please modify this macro to cast Preparation right after I cast Vanish+Cloak of Shadow in combat.

#showtooltip [nocombat] Stealth;[mod] Cloak of Shadows;Vanish
/cast [nocombat] !Stealth
/stopmacro [nocombat]
/cast [mod] Cloak of Shadows
/stopmacro [mod]
/cast [button:1] Cloak of Shadows; [button:2] Vanish
/stopmacro [button:2]
/cast [nostealth] Vanish