Using O=C1CCOCC1, Clc1ccc2c(c1)CNCc1nnc(C3CCN(c4ccccn4)CC3)n1-2 to produce Clc1ccc2c(c1)CN(C1CCOCC1)Cc1nnc(C3CCN(c4ccccn4)CC3)n1-2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.