Using CCOP(=O)(O)c1cccc(Cn2c(O)nc3c(N)nc(OCCOC)nc32)c1 to produce COCCOc1nc(N)c2nc(O)n(Cc3cccc(P(=O)(O)O)c3)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.