Using CCC(=O)N1CCNCC1, O=Cc1cnc(NC(=O)N(C2CCCCC2)C2CCCCC2)s1 to produce CCC(=O)N1CCN(Cc2cnc(NC(=O)N(C3CCCCC3)C3CCCCC3)s2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.