Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
What is the SFC when the specific impulse is 453?

### Inputs:
table_name: table, columns: ['Engine type', 'Scenario', 'SFC in lb/(lbf·h)', 'SFC in g/(kN·s)', 'Specific impulse (s)', 'Effective exhaust velocity (m/s)']

### Response:
SELECT SFC in g/(kN·s) FROM table WHERE Specific impulse (s) = 453