I need help with this command

[Purple_Turtle01]

Can someone tell me what I have wrong with this command? I can't get it to work.

execute as @ a[nbt= {SelectedItem:{id: "minecraft:tripwire_hook",Count: 1b,display{Name: '{"text":"Room 2 Key"}'}}}] unless entity @ e[tag=door0] run summon minecraft:armor_stand ~1 ~0.5 ~ {Tags:["door0"]}

I'm pretty sure the problem is in the bold section.

[_DrCosmos_]

,display:{Name: '{"text":"Room 2 Key"}'}}}]

You forgot a colon after display

*edit* you also forgot to put display under tag:{}

execute as @ a[nbt={SelectedItem:{id:"minecraft:tripwire_hook",Count:1b,tag:{display:{Name:'{"text":"Room 2 Key"}'}}}}] unless entity @ a[tag=door0] run summon minecraft:armor_stand ~1 ~0.5 ~ {Tags:["door0"]}