Name the coin under the token category that gives the highest max profit.
the highest max profit refers to max(subtract(high, low))
SELECT T1.name FROM coins AS T1 INNER JOIN historical AS T2 ON T1.id = T2.coin_id WHERE T1.category = 'token' ORDER BY T2.high - T2.low DESC LIMIT 1
CREATE TABLE coins
(
    id            INTEGER not null
        primary key,
    name          TEXT,
    slug          TEXT,
    symbol        TEXT,
    status        TEXT,
    category      TEXT,
    description   TEXT,
    subreddit     TEXT,
    notice        TEXT,
    tags          TEXT,
    tag_names     TEXT,
    website       TEXT,
    platform_id   INTEGER,
    date_added    TEXT,
    date_launched TEXT
);
CREATE TABLE IF NOT EXISTS "historical"
(
    date               DATE,
    coin_id            INTEGER,
    cmc_rank           INTEGER,
    market_cap         REAL,
    price              REAL,
    open               REAL,
    high               REAL,
    low                REAL,
    close              REAL,
    time_high          TEXT,
    time_low           TEXT,
    volume_24h         REAL,
    percent_change_1h  REAL,
    percent_change_24h REAL,
    percent_change_7d  REAL,
    circulating_supply REAL,
    total_supply       REAL,
    max_supply         REAL,
    num_market_pairs   INTEGER
);
