1 SPX6900 = 0.35278 USDC
SPCXB → USDC_arb SPCX → USDC_arb SOSO → USDC_arb SRD → USDC_arb STABLE → USDC_arb STAC → USDC_arb SPX → USDCn_m SPX → USDC SPX → USDB SPX → USDC_base SPX → USDC_m SPX → USDC_op