Using CCOCc1nc2c(c(C)c(C)n3nnnc23)n1Cc1cc(-c2cccnc2)no1 to produce CCOCc1nc2c(N)nc(C)c(C)c2n1Cc1cc(-c2cccnc2)no1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.