CREATE TABLE table_21133 ("Species" TEXT, "Species common name" TEXT, "NCBI Accession Number  ( mRNA/Protein ) " TEXT, "Length  ( bp/aa ) " TEXT, "Protein Identity" TEXT)

What is the NCBI Accession Number for the length of 5304bp/377aa?
SELECT "NCBI Accession Number (mRNA/Protein)" FROM table_21133 WHERE "Length (bp/aa)" = '5304bp/377aa'
SELECT "NCBI Accession Number (mRNA/Protein)" FROM "table_21133" WHERE "Length (bp/aa)" = '5304bp/377aa'