What is the NCBI Accession Number for the length of 5304bp/377aa?
CREATE TABLE table_16849531_2 (
    ncbi_accession_number__mrna_protein_ VARCHAR,
    length__bp_aa_ VARCHAR
)
SELECT ncbi_accession_number__mrna_protein_ FROM table_16849531_2 WHERE length__bp_aa_ = "5304bp/377aa"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the NCBI Accession Number for the length of 5304bp/377aa? ### Input: CREATE TABLE table_16849531_2 (
    ncbi_accession_number__mrna_protein_ VARCHAR,
    length__bp_aa_ VARCHAR
) ### Response: SELECT ncbi_accession_number__mrna_protein_ FROM table_16849531_2 WHERE length__bp_aa_ = "5304bp/377aa"