Using O=C1c2ccccc2C(=O)N1O, Cn1c(CO)ncc(OCc2ccccc2)c1=O to produce Cn1c(CON2C(=O)c3ccccc3C2=O)ncc(OCc2ccccc2)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.