Using CCC1Oc2ccccc2N(CC(=O)O)C1=O, Nc1ccc2c(c1)CC1(C2)NC(=O)NC1=O to produce CCC1Oc2ccccc2N(CC(=O)Nc2ccc3c(c2)CC2(C3)NC(=O)NC2=O)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.