Using CC(C)(C)OC(=O)N(CCCCC(=O)c1cc2c3c(c1)CCN3C(=O)CC2)CCc1ccccc1 to produce O=C(CCCCNCCc1ccccc1)c1cc2c3c(c1)CCN3C(=O)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.