Using c1ccncc1, O=C(O)CP(=O)(OCC(F)(F)F)OCC(F)(F)F to produce CN(C)C(=O)CP(=O)(OCC(F)(F)F)OCC(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.