Using CCCn1c(N)c(NC(=O)C2C3CC4C(C3=O)C42)c(=O)n(CCC)c1=O to produce CCCn1c(=O)c2[nH]c(C3C4CC5C(C4=O)C53)nc2n(CCC)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.