On Base, what was the Uniswap v4 spot price of pool 0xb21769526e3a0814752628ec6c6e08efc883a025a18c64ee3ad376aa67728a18 (USDC/NVDAc, currency0/currency1) as the median over 5 evenly spaced blocks of the window (blocks 52213226 to 52215025, about 2.5 hours before 52219525), as currency1 per 1e18 raw currency0 in raw units?