Using COC(=O)CCCc1nnc(-c2nccs2)c2cc(OC)ccc12 to produce COc1ccc2c(CCCC(=O)O)nnc(-c3nccs3)c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.