what is the formula for the compound that has a density of only 3.74 g/cm ^ 3 ?
CREATE TABLE table_203_613 (
    id number,
    "formula" text,
    "color" text,
    "symmetry" text,
    "space group" text,
    "no" number,
    "pearson symbol" text,
    "a (pm)" number,
    "b (pm)" number,
    "c (pm)" number,
    "z" number,
    "density, g/cm3" number
)
SELECT "formula" FROM table_203_613 WHERE "density, g/cm3" = 3.74
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 formula for the compound that has a density of only 3.74 g/cm ^ 3 ? ### Input: CREATE TABLE table_203_613 (
    id number,
    "formula" text,
    "color" text,
    "symmetry" text,
    "space group" text,
    "no" number,
    "pearson symbol" text,
    "a (pm)" number,
    "b (pm)" number,
    "c (pm)" number,
    "z" number,
    "density, g/cm3" number
) ### Response: SELECT "formula" FROM table_203_613 WHERE "density, g/cm3" = 3.74