Using O=P([O-])(O)O, COc1cccc(C(=O)c2ncc(C=O)c3cc(OCc4ccccc4)c(OC)cc23)c1 to produce COc1cccc(C(=O)c2ncc(C(=O)O)c3cc(OCc4ccccc4)c(OC)cc23)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.