Using CCCc1c(OCc2cccc(C(=O)Nc3cccc(C(=O)OC)c3)n2)ccc(C(C)=O)c1O to produce CCCc1c(OCc2cccc(C(=O)Nc3cccc(C(=O)O)c3)n2)ccc(C(C)=O)c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.