Using CC1(C)C(=O)N(CCCO)c2cc3[nH]c(NC(=O)c4ccccc4)nc3cc21 to produce CC1(C)C(=O)N(CCC=O)c2cc3[nH]c(NC(=O)c4ccccc4)nc3cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.