Using CC(C)(C)OC(=O)NC1CCN(CC2Cn3c4c(ccc3=O)CCC(=O)N42)CC1 to produce CC(C)(C)OC(=O)NC1CCN(CC2Cn3c(=O)ccc4ccc(=O)n2c43)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.