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

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'