Using COC(CCn1cc(-c2sc(C)nc2C)c(=O)[nH]c1=O)OC to produce Cc1nc(C)c(-c2cn(CCC=O)c(=O)[nH]c2=O)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.