Using O=Cc1csc(NC2CCCCC2)n1, O=C(O)CN1C(=O)CSC1=S to produce O=C(O)CN1C(=O)C(=Cc2csc(NC3CCCCC3)n2)SC1=S, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.