Using COc1c(-c2ccnc(C)c2)cnn1-c1ccc(C(=O)NCC2CCOCC2)cn1 to produce Cc1cc(-c2cnn(-c3ccc(C(=O)NCC4CCOCC4)cn3)c2O)ccn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.