Store a shinespark near the left door and use the remaining runway to jump as far as possible to the right. Once near the acid platforms, Shinespark diagonally to reach the item location.

Entrance condition:

{
  "comeInShinecharged": {
    "framesRequired": 155
  }
}

Requires:

{
  "notable": "Left Side Diagonal Shinespark"
}
"canTrickyJump"
"canShinechargeMovementComplex"
"canMidairShinespark"
{
  "shinespark": {
    "frames": 40
  }
}