应用: 拼多多
任务: 打开拼多多，进入“优惠券中心”，领取食品类优惠券
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: CLICK
step_id: 3
action: CLICK
step_id: 4
action: STOP