Using CCOP(=O)(CCCCOn1cnc2c(=O)[nH]c(N)nc21)OCC to produce Nc1nc2c(ncn2OCCCCP(=O)(O)O)c(=O)[nH]1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.