Using COc1cc2c(Oc3cc4ccccc4nc3C)ccnc2cc1OCCCl, C1COCCN1 to produce COc1cc2c(Oc3cc4ccccc4nc3C)ccnc2cc1OCCN1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.