user: Question: What's the highest rank of a pvg/zspd Code (IATA/ICAO) airport with a total cargo less than 2543394 metric tonnes?
Columns: ['Rank', 'Airport', 'Code (IATA/ICAO)', 'Total Cargo (Metric Tonnes)', '% Change']
Types: ['real', 'text', 'text', 'real', 'text']
Sample row: [1.0, 'Memphis International Airport', 'MEM/KMEM', 3697054.0, '0.0%']
SQL:

assistant: SELECT MAX("Rank") FROM "Table" WHERE "Code (IATA/ICAO)" = 'pvg/zspd' AND "Total Cargo (Metric Tonnes)" < 2543394.0;