Using ClCCl, O=C1c2ccccc2NC23OC12CN(Cc1ccccc1)C3c1ccc2c(c1)OCO2 to produce O=c1c2ccccc2[nH]c2c(-c3ccc4c(c3)CCO4)n(Cc3ccccc3)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.