Using Nc1nc2ccccc2c2c1nc1n2[C@@H](CCCNC(=O)N2CCOCC2)COC1 to produce Nc1nc2c(c3c1nc1n3[C@@H](CCCNC(=O)N3CCOCC3)COC1)CCCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.