Using CCOC(=O)N(CCCc1ccccc1)C1CSCCN(CC(=O)OC)C1=O to produce O=C(O)CN1CCSCC(N(CCCc2ccccc2)C(=O)O)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.