Given a banking invoice, please return the name of the vendor.
Bank Invoice: PURCHASE #0521 MERCHANT ALLBIRDS ACC XXX3846
Vendor: ALLBIRDS
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Bank Invoice: PURCHASE #6781 MERCHANT SHOPPERS ACC XXX9877
Vendor: SHOPPERS
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Bank Invoice: PURCHASE #0777 NAME_1 NAME_2 ACC XXX3846
Vendor: 