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

### Instruction:
How many League Cup goals correspond to 3 FA Cup Goals and a total over 15 for Chesterfield?

### Inputs:
table_name: table, columns: ['Scorer', 'Club', 'League goals', 'FA Cup goals', 'League Cup goals', 'Total']

### Response:
SELECT League Cup goals FROM table WHERE Total > 15 AND FA Cup goals = 3 AND Club = chesterfield