Using CC(C)Cn1c(=O)n(C)c(=O)c2c(SCCC(C)C(=O)O)n(Cc3cccc4ccccc34)nc21 to produce CC(C)Cn1c(=O)n(C)c(=O)c2c(SCCCC(=O)O)n(Cc3cccc4ccccc34)nc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.