Using CCOCc1nc2c(N)nc3ccccc3c2n1CCOCCOCCOCCP(=O)(OCC)OCC to produce CCOCc1nc2c(N)nc3ccccc3c2n1CCOCCOCCOCCP(=O)(O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.