Using C1COCCN1, O=C(O)c1ncc(Oc2ccc3c(c2)CCN(C2CCC2)CC3)cn1 to produce O=C(c1ncc(Oc2ccc3c(c2)CCN(C2CCC2)CC3)cn1)N1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.