Using CCOP(=O)(Cc1nnc2c(=O)[nH]c3cc(C(F)(F)F)ccc3n12)OCC to produce CCOP(=O)(O)Cc1nnc2c(=O)[nH]c3cc(C(F)(F)F)ccc3n12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.