Using O=c1ccocc1, Nc1ccc(-c2n[nH]c(=O)s2)cc1 to produce O=c1ccn(-c2ccc(-c3n[nH]c(=O)s3)cc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.