I've added ';"' at the end. it should fix it in theory.
bind e "+in_item3;+attack;-in_item3;-attack;+in_item1;+attack;-in_item1;-attack;+in_ability2;+attack;-in_ability2;-attack;+in_item4;+attack;-in_item4;-attack;+in_ability2;+attack;-in_ability2;-attack;+in_item2;+attack;-in_item2;-attack;"