Using CCOP(=O)(CCCCn1c(=O)c2c(ncn2Cc2ccccc2)n(C)c1=O)OCC to produce CCOP(=O)(CCCCn1c(=O)c2[nH]cnc2n(C)c1=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.