Using CCCn1c(=O)c2c(nc(/C=C\c3ccc(C(=O)O)cc3)n2C)n(CCC)c1=O to produce CCCn1c(=O)c2c(nc(/C=C/c3ccc(C(=O)O)cc3)n2C)n(CCC)c1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.