Using O=c1ccc2c(OCCCCl)cccc2[nH]1, NCC1COc2ccccc2O1 to produce O=c1ccc2c(OCCCNCC3COc4ccccc4O3)cccc2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.