Using COC(=O)Cn1c(=O)c2ccncc2n(Cc2cn(C)c3cccc(C)c23)c1=O to produce Cc1cccc2c1c(Cn1c(=O)n(CC(=O)O)c(=O)c3ccncc31)cn2C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.