Using CN(C)C=O, CC(C)(C)OC(=O)NC(Cc1nc2ccccc2s1)C(=O)O to produce CN(C)C(=O)C(Cc1nc2ccccc2s1)NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.