Using NCC1COc2cc3c(cc2O1)OCO3, BrCCCOc1ccc2cccnc2c1 to produce c1cnc2cc(OCCCNCC3COc4cc5c(cc4O3)OCO5)ccc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.