Using CCC(O)CC, Cc1cc(C)c(-c2cn(C)c3c(Cl)nc(C)nc23)c(C)c1 to produce CCC(CC)Oc1nc(C)nc2c(-c3c(C)cc(C)cc3C)cn(C)c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.