Using O=c1[nH]nc2c3c(cccc13)NC(c1cccnc1)C2c1cccnc1 to produce O=c1[nH]nc2c3c(cccc13)NC(c1cccnc1)C2C1CCCNC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.