Using COC(CN(Cc1nc2ccccc2n1C)C(=O)OCC1c2ccccc2-c2ccccc21)OC to produce Cn1c(CN(CC=O)C(=O)OCC2c3ccccc3-c3ccccc32)nc2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.