Using C1COCCN1, N#Cc1c(N2CCC(c3ccccc3)CC2)ccn2c(C=O)nnc12 to produce N#Cc1c(N2CCC(c3ccccc3)CC2)ccn2c(CN3CCOCC3)nnc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.