Using CC(C)(C)OC(=O)N1CCN(C(=O)NCc2ccc3c(c2)CN(C2CCC(=O)NC2=O)C3=O)CC1 to produce O=C1CCC(N2Cc3cc(CNC(=O)N4CCNCC4)ccc3C2=O)C(=O)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.